One-Bowl Peanut Butter Banana Cookie Bars

By AislePrompt Editorial · ·

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

Soft and chewy peanut butter cookie bars loaded with ripe bananas and chopped peanuts, made in a single bowl for simplicity. This American-inspired recipe, ready in about 40 minutes, layers ripe bananas, creamy peanut butter, brown sugar 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 210 calories and feeds 12, 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: 30 min Serves 12 American cuisine 210 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 350°F. Lightly grease or line an 8x8-inch baking pan with parchment paper.
  2. Step 2: In a large bowl, mash 2 medium ripe bananas until smooth. Add 1 cup creamy peanut butter and 1/2 cup packed brown sugar; stir until combined.
  3. Step 3: Beat in 2 large eggs and 1 tsp vanilla extract until the mixture is smooth and uniform.
  4. Step 4: In a separate small bowl, whisk together 1 cup all-purpose flour and 1 tsp baking powder.
  5. Step 5: Gradually fold the dry ingredients into the wet banana mixture until just combined. Gently fold in 1/2 cup chopped peanuts.
  6. Step 6: Spread the batter evenly in the prepared pan and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. Cool completely before slicing into 12 bars.

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