Protein-Packed Peanut Butter Banana Oat Cookies

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Soft, chewy cookies loaded with peanut butter, ripe banana, and oats, boosted with protein powder for a nutritious sweet snack. This american-inspired desserts (high protein) ready in about 25 minutes layers ripe banana, natural peanut butter, rolled oats into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 120 calories and feeds 10, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 15 min Serves 10 American cuisine 120 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 350°F (177°C) and line a baking sheet with parchment paper.
  2. Step 2: In a large bowl, combine 1 medium mashed ripe banana with 1/2 cup natural peanut butter and 1 large egg; mix until smooth.
  3. Step 3: Stir in 1 cup rolled oats, 1/4 cup vanilla whey protein powder, 1/2 tsp baking powder, and 1/2 tsp cinnamon until evenly incorporated.
  4. Step 4: Fold 1/4 cup mini dark chocolate chips into the batter.
  5. Step 5: Drop heaping tablespoons of dough onto the prepared baking sheet about 2 inches apart, flattening slightly with the back of a spoon.
  6. Step 6: Bake for 12-15 minutes until edges are set and bottoms are lightly golden; cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.

Frequently asked questions

How long does Protein-Packed Peanut Butter Banana Oat Cookies take to make?

Total time is about 25 minutes (10 min prep + 15 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.

How do I store leftover Protein-Packed Peanut Butter Banana Oat Cookies?

Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.

Can I substitute ingredients in Protein-Packed Peanut Butter Banana Oat Cookies?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Protein-Packed Peanut Butter Banana Oat Cookies for a different number of people?

The recipe is written for 10 servings. Multiply each ingredient by (your serving target / 10). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Protein-Packed Peanut Butter Banana Oat Cookies high protein?

Yes — this recipe is tagged high protein based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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