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The Best Gooey Chunky Peanut Butter Banana Oatmeal Bars Recipe

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4 from 9 reviews

These Peanut Butter Banana Oatmeal Bars are thick, chunky, and gooey, bursting with the sweet flavor of ripe bananas and the rich, salty taste of creamy peanut butter. Perfectly balanced macros make them an ideal breakfast, snack, or dessert. Enhanced with optional protein powder and chocolate chips, they can be enjoyed warm or chilled, and pair beautifully with Greek yogurt and honey for an extra protein boost and indulgent touch.

  • Total Time: 30 minutes
  • Yield: 9 bars

Ingredients

Main Ingredients

  • 3 large bananas (400g), the riper the better
  • 1/2 cup creamy peanut butter (120g)
  • 3 cups rolled oats (240g)
  • 1/2 cup protein powder (62g), optional
  • 1 tsp vanilla extract, optional
  • 2 Tbsp chocolate chips (30g)

Instructions

  1. Preheat and Prepare Pan: Preheat your oven to 350°F (175°C). Line an 8×8-inch baking dish with parchment paper to prevent sticking and ensure easy removal of the bars.
  2. Mash and Mix Wet Ingredients: In a bowl, mash the ripe bananas thoroughly with a fork until smooth. Stir in the creamy peanut butter, protein powder (if using), and vanilla extract until the mixture is well combined.
  3. Add Oats and Chocolate Chips: Fold the rolled oats into the wet mixture, ensuring even distribution. If adding chocolate chips, mix in half of them now to disperse throughout the batter.
  4. Transfer to Baking Dish: Spread the oat mixture evenly into the prepared baking dish. Sprinkle the remaining chocolate chips on top for a gooey finish.
  5. Bake: Bake in the preheated oven for 18-22 minutes, or until the bars are set and lightly golden around the edges.
  6. Cool and Slice: Remove from the oven and allow the bars to cool completely in the baking dish. For firmer bars and enhanced flavor melding, refrigerate overnight before slicing into 9 bars.
  7. Serve: Enjoy warm or chilled. For an added protein boost and sweetness, serve with Greek yogurt and a drizzle of honey topped with banana slices.

Notes

  • Use very ripe bananas for the best natural sweetness and moisture.
  • Protein powder is optional but recommended for increased protein content.
  • Refrigerating the bars overnight helps them firm up and enhances their flavor.
  • Bars keep well in an airtight container in the fridge for up to 5 days.
  • Chocolate chips can be omitted or substituted with nuts or dried fruit for variations.
  • Author: Daisy
  • Prep Time: 10 minutes
  • Cook Time: 20 minutes
  • Category: Breakfast, Snack, Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegan