Protein Brownies: Every Swap Ranked by Protein Density

A classic brownie is butter, sugar and flour, so very little of its energy is protein. The recipes below change one ingredient at a time and rank each square, and a table at the end sets the closest versions against the protein bars and cookies we track. The single-serve mug brownie is a different portion from a pan square, so compare its density, not its grams. Everything is our own formulation, with macros computed from USDA ingredient data and the label panels of products we track.

How these were made: formulated by ProteinBenchmark; macros are computed from USDA ingredient data and, for products we track, their label panels. The recipes have not been kitchen-tested, and the images are AI-generated illustrations, not photos of the finished dishes.

A tray of cut brownie squares with one lifted out
AI-generated illustration

The ranking

Per serving, sorted by Protein Density (% of calories from protein). Platinum 40%+ · Gold 25–39% · Silver 15–24% · Avoid under 15%. Every figure is an estimate (est.), for one square, or the single serving a recipe describes. Where the sources for a product panel disagree, each recipe card that uses it states the figure used and the disagreement.

# Recipe Protein Calories Density g / 100 cal Tier
1 Single-Serve Mug Brownie
1 mug brownie (the whole mug, one serving)
 35.1g 280 50.2%est. 12.5g Platinum
2 Max-Protein, All-Powder, No Flour
1 square (1/16 of an 8-inch pan)
 8.9g 136 26.3%est. 6.6g Gold
3 Step 4: Cocoa-Forward, Lower Sugar
1 square (1/16 of an 8-inch pan)
 6.2g 135 18.4%est. 4.6g Silver
4 Black-Bean Base, No Flour
1 square (1/16 of an 8-inch pan)
 6.1g 131 18.4%est. 4.6g Silver
5 Step 3: Egg Whites for Two Whole Eggs
1 square (1/16 of an 8-inch pan)
 6.1g 172 14.2%est. 3.5g Avoid
6 Step 2: Greek Yogurt for Half the Butter
1 square (1/16 of an 8-inch pan)
 6.2g 178 14%est. 3.5g Avoid
7 Step 2 Alternative: Applesauce for Half the Butter
1 square (1/16 of an 8-inch pan)
 5.5g 177 12.5%est. 3.1g Avoid
8 Step 1: Whey Protein Powder for Part of the Flour
1 square (1/16 of an 8-inch pan)
 5.6g 212 10.5%est. 2.6g Avoid
9 Classic Fudgy Brownie (baseline)
1 square (1/16 of an 8-inch pan)
 2.8g 211 5.3%est. 1.3g Avoid

The swap ladder

Each rung changes one thing from the build it follows. Deltas are per serving against that build.

Step Swap Protein Calories Density
0 Classic Fudgy Brownie (baseline) 2.8g 211 5.3%
1 Step 1: Whey Protein Powder for Part of the Flour
60 g of the 120 g all-purpose flour to 60 g Naked Whey, unflavored
 5.6g +2.8g 212 +1 10.5% +5.2%
2 Step 2: Greek Yogurt for Half the Butter
85 g of the 170 g butter to 120 g Chobani nonfat plain Greek yogurt (Greek yogurt replaces half the butter; fold gently)
 6.2g +0.6g 178 -34 14% +3.5%
2 (alt) Step 2 Alternative: Applesauce for Half the Butter
85 g of the 170 g butter to 120 g unsweetened applesauce (Applesauce replaces half the butter instead of the yogurt)
Protein drops 0.1g but density rises 2% because calories fall 35 kcal.
 5.5g -0.1g 177 -35 12.5% +2%
3 Step 3: Egg Whites for Two Whole Eggs
100 g (two) of the three whole eggs to 100 g egg whites (about three large whites) (Egg whites replace two of the three whole eggs; one whole egg stays in the batter)
Protein drops 0.1g but density rises 0.2% because calories fall 6 kcal.
 6.1g -0.1g 172 -6 14.2% +0.2%
4 Step 4: Cocoa-Forward, Lower Sugar
120 g of the 250 g sugar, 35 g of the 85 g chocolate chips, and 15 g more cocoa to 130 g sugar, 50 g chips and 60 g cocoa (More cocoa, less sugar and fewer chocolate chips)
 6.2g +0.1g 135 -37 18.4% +4.2%

The recipes

Chocolate mug brownie in a white mug with a spoon, top cracked slightly
AI-generated illustration

#1 Single-Serve Mug Brownie

Platinum

A one-mug version built from the same held ingredients: whey protein powder, cocoa, egg white and Greek yogurt. Standalone, not part of the ladder.

Per serving: 35.1g protein · 280 kcal · 50.2% (est.)

1 mug brownie (the whole mug, one serving) · Prep 5 min · Cook 2 min

Ingredients (whole batch)

  • Naked Whey, unflavored (1 label serving of 30 g): 30 g
  • Unsweetened cocoa powder: 12 g
  • Granulated sugar: 12 g
  • Egg whites (about 1 large egg white): 33 g
  • Chobani nonfat plain Greek yogurt (0.2 label servings of 170 g): 40 g
  • Semisweet chocolate chips: 10 g
  • Salt: 1 g
Products used (label panel values)
  • Naked Nutrition Naked Whey — manufacturer page (nakednutrition.com), seen 2026-10-24
  • Chobani Nonfat Plain Greek Yogurt — retailer label copies (stopandshop.com, hannaford.com, giantfoodstores.com, chobani.com), seen 2026-10-24 The manufacturer page (chobani.com, read in a browser) confirms 16 g protein for the 32 oz tub; calories and the 170 g serving weight are retailer-level (the panel would not expand).

Method

  1. Whisk the protein powder, cocoa, sugar and salt in a large microwave-safe mug.
  2. Stir in the egg white and yogurt until no dry pockets remain, then fold in the chocolate chips.
  3. Microwave 60 to 75 seconds, checking at 60 because microwaves vary, and let it stand a minute before eating.
Dark dense brownie square with a matte top and a tight crumb, on a plate
AI-generated illustration

#2 Max-Protein, All-Powder, No Flour

Gold

Branches from step 4: all the flour becomes whey protein powder (120 g in the pan), keeping the yogurt and egg whites. A powder-forward version.

Per serving: 8.9g protein · 136 kcal · 26.3% (est.)

1 square (1/16 of an 8-inch pan); the pan makes 16 servings · Prep 15 min · Cook 26 min

Ingredients (whole batch)

  • Butter, salted: 85 g
  • Granulated sugar: 130 g
  • Whole eggs (about 1 large egg): 50 g
  • Vanilla extract: 8 g
  • Unsweetened cocoa powder: 60 g
  • Salt: 3 g
  • Semisweet chocolate chips: 50 g
  • Naked Whey, unflavored (4 label servings of 30 g): 120 g
  • Chobani nonfat plain Greek yogurt (0.7 label servings of 170 g): 120 g
  • Egg whites (about 3 large egg whites): 100 g
Products used (label panel values)
  • Naked Nutrition Naked Whey — manufacturer page (nakednutrition.com), seen 2026-10-24
  • Chobani Nonfat Plain Greek Yogurt — retailer label copies (stopandshop.com, hannaford.com, giantfoodstores.com, chobani.com), seen 2026-10-24 The manufacturer page (chobani.com, read in a browser) confirms 16 g protein for the 32 oz tub; calories and the 170 g serving weight are retailer-level (the panel would not expand).

Method

  1. Heat the oven to 350 F (175 C) and line an 8-inch square pan with parchment.
  2. Melt the reduced butter, stir in the sugar, let it cool a minute, then beat in the whole egg, egg whites and vanilla and whisk in the yogurt until smooth.
  3. Whisk the protein powder, cocoa and salt together, fold into the wet mix until just combined, then fold in the chips.
  4. Spread in the pan and bake 20 to 24 minutes, checking early; take it out as soon as the edges are set. Cool completely before cutting into 16 squares.
Very dark brownie square with a matte top on a small plate
AI-generated illustration

#3 Step 4: Cocoa-Forward, Lower Sugar

Silver

Trims sugar by about half and leans on cocoa, the last low-cost step before the pan stops looking like a brownie.

Per serving: 6.2g protein · 135 kcal · 18.4% (est.)

1 square (1/16 of an 8-inch pan); the pan makes 16 servings · Prep 15 min · Cook 28 min

Ingredients (whole batch)

  • Butter, salted: 85 g
  • Granulated sugar: 130 g
  • Whole eggs (about 1 large egg): 50 g
  • Vanilla extract: 8 g
  • All-purpose flour: 60 g
  • Unsweetened cocoa powder: 60 g
  • Salt: 3 g
  • Semisweet chocolate chips: 50 g
  • Naked Whey, unflavored (2 label servings of 30 g): 60 g
  • Chobani nonfat plain Greek yogurt (0.7 label servings of 170 g): 120 g
  • Egg whites (about 3 large egg whites): 100 g
Products used (label panel values)
  • Naked Nutrition Naked Whey — manufacturer page (nakednutrition.com), seen 2026-10-24
  • Chobani Nonfat Plain Greek Yogurt — retailer label copies (stopandshop.com, hannaford.com, giantfoodstores.com, chobani.com), seen 2026-10-24 The manufacturer page (chobani.com, read in a browser) confirms 16 g protein for the 32 oz tub; calories and the 170 g serving weight are retailer-level (the panel would not expand).

Method

  1. Heat the oven to 350 F (175 C) and line an 8-inch square pan with parchment.
  2. Melt the reduced butter, stir in the sugar, let it cool a minute, then beat in the whole egg, egg whites and vanilla and whisk in the yogurt until smooth.
  3. Whisk the flour, protein powder, the larger measure of cocoa and the salt together, fold into the wet mix until just combined, then fold in the chips.
  4. Spread in the pan and bake 24 to 28 minutes, until the edges are set. Cool completely before cutting into 16 squares.
Flat-topped dark brownie square, fudgy cut face, on a white plate
AI-generated illustration

#4 Black-Bean Base, No Flour

Silver

Branches from step 4: pureed black beans replace the flour and yogurt. Protein stays similar to step 4.

Per serving: 6.1g protein · 131 kcal · 18.4% (est.)

1 square (1/16 of an 8-inch pan); the pan makes 16 servings · Prep 20 min · Cook 28 min

Ingredients (whole batch)

  • Butter, salted: 85 g
  • Granulated sugar: 130 g
  • Whole eggs (about 1 large egg): 50 g
  • Vanilla extract: 8 g
  • Unsweetened cocoa powder: 60 g
  • Salt: 3 g
  • Semisweet chocolate chips: 50 g
  • Naked Whey, unflavored (2 label servings of 30 g): 60 g
  • Egg whites (about 3 large egg whites): 100 g
  • Canned black beans, drained and blended smooth: 250 g
Products used (label panel values)

Method

  1. Heat the oven to 350 F (175 C) and line an 8-inch square pan with parchment.
  2. Blend the drained, rinsed beans with the eggs, egg whites, vanilla and melted butter until completely smooth.
  3. Add the sugar, protein powder, cocoa and salt to the blender and pulse until combined, then stir in the chips by hand.
  4. Spread in the pan and bake 26 to 30 minutes, until the centre is just set. Cool completely before cutting into 16 squares.
Brownie square with a thin crackled top and a clean cut edge
AI-generated illustration

#5 Step 3: Egg Whites for Two Whole Eggs

Avoid

Two of the three whole eggs become egg whites, dropping yolk fat while keeping the protein.

Per serving: 6.1g protein · 172 kcal · 14.2% (est.)

1 square (1/16 of an 8-inch pan); the pan makes 16 servings · Prep 15 min · Cook 28 min

Ingredients (whole batch)

  • Butter, salted: 85 g
  • Granulated sugar: 250 g
  • Whole eggs (about 1 large egg): 50 g
  • Vanilla extract: 8 g
  • All-purpose flour: 60 g
  • Unsweetened cocoa powder: 45 g
  • Salt: 3 g
  • Semisweet chocolate chips: 85 g
  • Naked Whey, unflavored (2 label servings of 30 g): 60 g
  • Chobani nonfat plain Greek yogurt (0.7 label servings of 170 g): 120 g
  • Egg whites (about 3 large egg whites): 100 g
Products used (label panel values)
  • Naked Nutrition Naked Whey — manufacturer page (nakednutrition.com), seen 2026-10-24
  • Chobani Nonfat Plain Greek Yogurt — retailer label copies (stopandshop.com, hannaford.com, giantfoodstores.com, chobani.com), seen 2026-10-24 The manufacturer page (chobani.com, read in a browser) confirms 16 g protein for the 32 oz tub; calories and the 170 g serving weight are retailer-level (the panel would not expand).

Method

  1. Heat the oven to 350 F (175 C) and line an 8-inch square pan with parchment.
  2. Melt the reduced butter, stir in the sugar, let it cool a minute, then beat in the whole egg, egg whites and vanilla and whisk in the yogurt until smooth.
  3. Whisk the flour, protein powder, cocoa and salt together, fold into the wet mix until just combined, then fold in the chips.
  4. Spread in the pan and bake 24 to 28 minutes, until the edges are set. Cool completely before cutting into 16 squares.
Brownie square, slightly lighter chocolate colour, soft edges, on a cooling rack
AI-generated illustration

#6 Step 2: Greek Yogurt for Half the Butter

Avoid

Nonfat Greek yogurt takes the place of half the butter, cutting fat calories while adding a little protein.

Per serving: 6.2g protein · 178 kcal · 14% (est.)

1 square (1/16 of an 8-inch pan); the pan makes 16 servings · Prep 15 min · Cook 28 min

Ingredients (whole batch)

  • Butter, salted: 85 g
  • Granulated sugar: 250 g
  • Whole eggs (about 3 large eggs): 150 g
  • Vanilla extract: 8 g
  • All-purpose flour: 60 g
  • Unsweetened cocoa powder: 45 g
  • Salt: 3 g
  • Semisweet chocolate chips: 85 g
  • Naked Whey, unflavored (2 label servings of 30 g): 60 g
  • Chobani nonfat plain Greek yogurt (0.7 label servings of 170 g): 120 g
Products used (label panel values)
  • Naked Nutrition Naked Whey — manufacturer page (nakednutrition.com), seen 2026-10-24
  • Chobani Nonfat Plain Greek Yogurt — retailer label copies (stopandshop.com, hannaford.com, giantfoodstores.com, chobani.com), seen 2026-10-24 The manufacturer page (chobani.com, read in a browser) confirms 16 g protein for the 32 oz tub; calories and the 170 g serving weight are retailer-level (the panel would not expand).

Method

  1. Heat the oven to 350 F (175 C) and line an 8-inch square pan with parchment.
  2. Melt the reduced butter, stir in the sugar, let it cool a minute, then beat in the eggs and vanilla and whisk in the yogurt until smooth.
  3. Whisk the flour, protein powder, cocoa and salt together, fold into the wet mix until just combined, then fold in the chips.
  4. Spread in the pan and bake 24 to 28 minutes, until the edges are set. Cool completely before cutting into 16 squares.
Brownie square with a soft, slightly shiny top beside a small bowl of applesauce
AI-generated illustration

#7 Step 2 Alternative: Applesauce for Half the Butter

Avoid

The same butter cut as step 2 but with unsweetened applesauce, for readers who avoid dairy-based yogurt.

Per serving: 5.5g protein · 177 kcal · 12.5% (est.)

1 square (1/16 of an 8-inch pan); the pan makes 16 servings · Prep 15 min · Cook 28 min

Ingredients (whole batch)

  • Butter, salted: 85 g
  • Granulated sugar: 250 g
  • Whole eggs (about 3 large eggs): 150 g
  • Vanilla extract: 8 g
  • All-purpose flour: 60 g
  • Unsweetened cocoa powder: 45 g
  • Salt: 3 g
  • Semisweet chocolate chips: 85 g
  • Naked Whey, unflavored (2 label servings of 30 g): 60 g
  • Unsweetened applesauce: 120 g
Products used (label panel values)

Method

  1. Heat the oven to 350 F (175 C) and line an 8-inch square pan with parchment.
  2. Melt the reduced butter, stir in the sugar, let it cool a minute, then beat in the eggs and vanilla and stir in the applesauce.
  3. Whisk the flour, protein powder, cocoa and salt together, fold into the wet mix until just combined, then fold in the chips.
  4. Spread in the pan and bake 24 to 28 minutes, until the edges are set. Cool completely before cutting into 16 squares.
Dense brownie square with a matte top and a few chocolate chips showing
AI-generated illustration

#8 Step 1: Whey Protein Powder for Part of the Flour

Avoid

Replaces half the flour with an unflavored whey protein powder.

Per serving: 5.6g protein · 212 kcal · 10.5% (est.)

1 square (1/16 of an 8-inch pan); the pan makes 16 servings · Prep 15 min · Cook 25 min

Ingredients (whole batch)

  • Butter, salted: 170 g
  • Granulated sugar: 250 g
  • Whole eggs (about 3 large eggs): 150 g
  • Vanilla extract: 8 g
  • All-purpose flour: 60 g
  • Unsweetened cocoa powder: 45 g
  • Salt: 3 g
  • Semisweet chocolate chips: 85 g
  • Naked Whey, unflavored (2 label servings of 30 g): 60 g
Products used (label panel values)

Method

  1. Heat the oven to 350 F (175 C) and line an 8-inch square pan with parchment.
  2. Melt the butter, stir in the sugar, then beat in the eggs one at a time with the vanilla.
  3. Whisk the flour, protein powder, cocoa and salt together, sift into the wet mix and fold until just combined, then fold in the chips.
  4. Spread in the pan and bake 20 to 24 minutes, checking early because protein-rich batters set faster. Cool completely before cutting into 16 squares.
Square of dense dark brownie with a shiny cracked top on a parchment sheet
AI-generated illustration

#9 Classic Fudgy Brownie (baseline)

Avoid

The reference brownie: butter, sugar, three whole eggs, flour, cocoa and chips. This is the pan every swap is measured against.

Per serving: 2.8g protein · 211 kcal · 5.3% (est.) · 26.5g carbs · 11.6g fat

1 square (1/16 of an 8-inch pan); the pan makes 16 servings · Prep 15 min · Cook 25 min

Ingredients (whole batch)

  • Butter, salted: 170 g
  • Granulated sugar: 250 g
  • Whole eggs (about 3 large eggs): 150 g
  • Vanilla extract: 8 g
  • All-purpose flour: 120 g
  • Unsweetened cocoa powder: 45 g
  • Salt: 3 g
  • Semisweet chocolate chips: 85 g

Method

  1. Heat the oven to 350 F (175 C) and line an 8-inch square pan with parchment.
  2. Melt the butter, stir in the sugar, then beat in the eggs one at a time with the vanilla.
  3. Sift in the flour, cocoa and salt and fold until just combined, then fold in the chocolate chips.
  4. Spread in the pan and bake 22 to 26 minutes, until the edges are set and the centre is barely firm. Cool completely before cutting into 16 squares.

Versus store-bought

Label servings differ from recipe servings, so compare density and grams of protein per 100 kcal, not grams per serving. Only the products we track are shown.

Store-bought product Density g / 100 cal Compared with Recipe density Recipe g / 100 cal
Quest Chocolate Brownie Protein Bar
20g protein, 180 kcal per 60 g label serving — manufacturer page (questnutrition.com), seen 2026-10-24
Retailer copies disagree (Vitacost and HEB 170 kcal, Kroger and others 180); the manufacturer panel says 180.
 44.4% Platinum 11.1g Max-Protein, All-Powder, No Flour 26.3% Gold 6.6g
Barebells Creamy Crisp Protein Bar
20g protein, 200 kcal per 55 g label serving — retailer label copies (kroger.com, stopandshop.com), seen 2026-10-24
FatSecret shows 195 kcal; the retailer labels show 200 kcal.
 40% Platinum 10g Max-Protein, All-Powder, No Flour 26.3% Gold 6.6g
Lenny & Larry’s Double Chocolate Complete Cookie
8g protein, 230 kcal per 57 g label serving — retailer label copies (kroger.com, heb.com), seen 2026-10-24
Kroger and HEB show 230 kcal per half cookie; MyFoodDiary and EatThisMuch show 210. 230 kcal is used.
 13.9% Avoid 3.5g Max-Protein, All-Powder, No Flour 26.3% Gold 6.6g
Quest Chocolate Brownie Protein Bar
20g protein, 180 kcal per 60 g label serving — manufacturer page (questnutrition.com), seen 2026-10-24
Retailer copies disagree (Vitacost and HEB 170 kcal, Kroger and others 180); the manufacturer panel says 180.
 44.4% Platinum 11.1g Step 4: Cocoa-Forward, Lower Sugar 18.4% Silver 4.6g
Barebells Creamy Crisp Protein Bar
20g protein, 200 kcal per 55 g label serving — retailer label copies (kroger.com, stopandshop.com), seen 2026-10-24
FatSecret shows 195 kcal; the retailer labels show 200 kcal.
 40% Platinum 10g Step 4: Cocoa-Forward, Lower Sugar 18.4% Silver 4.6g
Lenny & Larry’s Double Chocolate Complete Cookie
8g protein, 230 kcal per 57 g label serving — retailer label copies (kroger.com, heb.com), seen 2026-10-24
Kroger and HEB show 230 kcal per half cookie; MyFoodDiary and EatThisMuch show 210. 230 kcal is used.
 13.9% Avoid 3.5g Step 4: Cocoa-Forward, Lower Sugar 18.4% Silver 4.6g

Protein Brownies FAQ

Which protein brownie recipe has the most protein?

Max-Protein, All-Powder, No Flour has the most protein among 7 of the 9 protein brownie recipes ranked here (excluding the baseline, Classic Fudgy Brownie and the branch version, Single-Serve Mug Brownie; they are shown for comparison): 8.9g per serving (136 kcal, 26.3% Protein Density, Gold tier). The baseline, Classic Fudgy Brownie, has 2.8g per serving at 5.3% (Avoid tier).

How much protein is in a serving of protein brownie?

Across the 7 rebuilt recipes (excluding the baseline, Classic Fudgy Brownie and the branch version, Single-Serve Mug Brownie), a serving has 5.5g to 8.9g of protein. The baseline (Classic Fudgy Brownie) has 2.8g per serving. Serving sizes are defined on each recipe card and differ between recipes, and all figures are estimates computed from USDA ingredient data.

Which swap adds the most protein to protein brownie?

Among the main-ladder steps (alternatives to a step and serving ideas are not compared), Step 1: Whey Protein Powder for Part of the Flour adds the most protein in a single step: +2.8g per serving (2.8g to 5.6g), +1 kcal, taking density from 5.3% to 10.5%.

Can a swap lower protein and still improve density?

Yes. Step 3: Egg Whites for Two Whole Eggs: Protein drops 0.1g but density rises 0.2% because calories fall 6 kcal. Density rises because it is a ratio of protein to calories.

NEXT IN THIS GROUP Protein cheesecake, ranked Another dessert rebuilt swap by swap. OPEN CROSS THE DATASET Highest-protein bars The store-bought bars these brownies are compared with, ranked by Protein Density. OPEN UNDERSTAND THE METRIC How Protein Density is scored The formula, tier thresholds and sources behind every ranking on this page. OPEN
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Estimate — honest disclosure: Estimate. Macros are computed from USDA SR-Legacy ingredient data (and, for protein powders, the manufacturer nutrition panel) for the ingredient weights shown, divided by the stated number of servings. Brands, ingredient substitutions and cooking losses change real-world numbers. These are our own formulations and have not been kitchen-tested. Ingredient FDC IDs are recorded for every USDA-sourced ingredient; protein powders use the manufacturer nutrition panel. Servings are as stated on each recipe, and syrup, butter on top and other toppings are not counted. See methodology for the scoring formula and sources.
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