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

1. Preheat oven to 350°F. Line an 8×8 baking pan with parchment paper or grease lightly.
2. In a large bowl, whisk together melted butter, applesauce, vanilla, eggs, and sugar until smooth.
3. In a separate bowl, combine baking powder, salt, flour, and Post Iso Chocolate Bar. Whisk to remove any clumps.
4. Add dry ingredients to wet ingredients and stir until just combined — don't overmix.
5. Fold in mini chocolate chips.
6. Pour batter into the prepared pan and smooth the top with a spatula.
7. 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).
8. Let cool in the pan for 10–15 minutes before cutting.
9. 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.