Easy Protein Brownie Recipe with Chocolate Drizzle
By Jon Klipstein, U.S. Army Combat Veteran & Founder of Die Tryin Co., and David Ortiz, Recipe Developer & U.S. Army Combat Veteran
EASY PROTEIN BROWNIES, NO COMPLICATED INGREDIENTS
Not every protein recipe needs almond flour, monk fruit, and a 14-step process. This is the classic-style protein brownie — standard pantry ingredients, applesauce as the moisture trick, and a scoop and a half of Post Iso Chocolate Bar to bump the protein without changing the brownie identity. Bake at 350°F, finish with a chocolate drizzle, done.
If you want the fudgier, lower-sugar version of protein brownies, see our canonical Protein Brownies recipe — that one uses coconut sugar and runs a tighter macro profile. This is the easier, more accessible version with whatever you've already got in the kitchen.
WHY THIS RECIPE WORKS
Three things make this brownie format work:
- Applesauce replaces half the fat. Standard brownie recipes call for ½ cup butter; this one uses ¼ cup butter + ¼ cup unsweetened applesauce. Applesauce adds moisture without adding fat, so you keep the chewy texture with lower total calories.
- Post Iso Chocolate Bar replaces some of the flour-only volume. Whey isolate adds protein and chocolate flavor without making the brownies dry — the trick is to keep it under ⅓ of total dry volume so the texture stays brownie, not protein-bar.
- Mini chocolate chips do the heavy flavor lifting. ½ cup of mini chips means every bite has chocolate even with less added fat from butter. That's how you keep the brownie tasting like a brownie, not a "protein dessert."
INGREDIENTS
- ¼ cup melted butter
- ¼ cup unsweetened applesauce
- ½ tsp vanilla extract
- 2 large eggs
- 1 cup granulated sugar
- ¼ tsp baking powder
- ¼ tsp salt
- ½ cup all-purpose flour
- ⅓ cup Post Iso Chocolate Bar (or Rocky Road for an extra chocolate hit)
- ½ cup mini chocolate chips
Optional chocolate drizzle: 2 tbsp chocolate chips melted with 1 tsp coconut oil or butter for a glossy finish.
HOW TO MAKE THEM
- Preheat oven to 350°F. Line an 8×8 baking pan with parchment paper or grease lightly.
- In a large bowl, whisk together melted butter, applesauce, vanilla, eggs, and sugar until smooth.
- In a separate bowl, combine baking powder, salt, flour, and Post Iso Chocolate Bar. Whisk to remove any clumps.
- Add dry ingredients to wet ingredients and stir until just combined — don't overmix.
- Fold in mini chocolate chips.
- Pour batter into the prepared pan and smooth the top with a spatula.
- Bake at 350°F for approximately 30 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs (not wet batter).
- Let cool in the pan for 10–15 minutes before cutting.
- Drizzle with melted chocolate if using. Cut into 12 squares.
MACROS (PER BROWNIE, ESTIMATED)
⚠️ Verify after bake — macros calculated from standard ingredient values; your exact result will vary slightly based on brand and measurements.
- Servings: 12 brownies
- Calories: ~165 per brownie
- Protein: ~5g per brownie
- Carbs: ~24g per brownie
- Fat: ~6g per brownie
Honest framing: this isn’t a "high-protein" dessert by athlete standards (a real high-protein brownie is 10g+ per square). This is a protein-boosted classic brownie — you get the brownie experience with a protein bump that's better than the standard 1–2g of a Betty Crocker mix. If you want maximum protein density, the canonical Protein Brownies recipe is the better play.
5 FLAVOR VARIATIONS
- Rocky Road: swap Post Iso Chocolate Bar for Post Iso Rocky Road + fold in ¼ cup chopped almonds and ¼ cup mini marshmallows
- Salted Caramel: swap for Post Iso Salted Caramel + drizzle caramel sauce on top instead of (or with) chocolate
- Peanut butter: swirl 2 tbsp peanut butter into the top of the batter before baking; use Chocolate Bar Post Iso
- Cinnamon Cereal: swap Post Iso for Cinnamon Cereal flavor + add ½ tsp cinnamon to dry ingredients for a "cinnamon brownie" twist
- Espresso boost: add 1 tsp instant espresso powder to dry ingredients for richer chocolate flavor
WHY ADD PROTEIN TO DESSERT?
Two real reasons: satiety and total daily protein. The first matters if you struggle to feel full on a cut; the second matters if you struggle to hit your protein target every day (1.6–2.2 g/kg of body weight per day per current sports nutrition research [ISSN Protein Position Stand, 2017]).
A protein-boosted dessert isn’t magic — it’s convenient. Adding 5g of protein to a brownie you were going to eat anyway is a small win. Stacking five small wins per day adds up. Read more on hitting protein targets: Ultimate Guide to Protein.
FAQ
Can I use a different protein powder than Post Iso?
Yes, but expect texture changes. Casein protein absorbs more liquid and creates denser, almost-cake-like brownies. Plant proteins (pea, rice) often create gritty texture. Whey isolate (Post Iso) gives the closest-to-traditional brownie texture, which is why it’s the default here.
Can I make these gluten-free?
Substitute the ½ cup all-purpose flour with a 1:1 gluten-free flour blend (King Arthur or Bob's Red Mill both work). Bake time may be 2–3 minutes shorter; check at the 27-minute mark.
Can I reduce the sugar?
Yes — you can drop the granulated sugar to ¾ cup without major texture changes, or substitute up to half with monk fruit / erythritol blends (1:1 ratio). Going below ¾ cup makes the brownies dry; the sugar is doing real work for moisture as well as sweetness.
How do I store them?
Airtight container at room temperature for 3 days, or refrigerated for up to 1 week. Freeze individual brownies in plastic wrap for up to 2 months — thaw at room temp for 15 minutes before eating.
Can I double the recipe?
Yes — double everything and use a 9×13 pan instead of 8×8. Bake time becomes 35–40 minutes; check for doneness with the toothpick test.
Why mini chocolate chips instead of regular?
Even distribution. Regular chocolate chips sink to the bottom of brownies; minis stay distributed through the batter so every bite has chocolate. If you only have regular chips, toss them in 1 tsp of flour before folding in to help suspend them in the batter.
READY TO GEAR UP?
For more protein-boosted recipes:
- Post Iso — 24g whey isolate per scoop; the foundation of every DTC protein recipe
- Protein Brownies (canonical) — the fudgier, lower-sugar version of this same idea
- 3 High-Protein Whey Isolate Recipes — more easy bakes built around Post Iso
- Chocolate Protein Overnight Oats — breakfast version of the chocolate + Post Iso combo
Not sure where to start? Take the DTC supplement quiz — two minutes, dialed-in stack recommendation.
ALWAYS FORWARD.
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