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Ultimate No-Bake Chocolate Peanut Butter Oatmeal Bars

A single square of No-Bake Chocolate Peanut Butter Oat Bars showing the oat base, peanut butter layer, and chocolate topping.

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Make these simple, layered bars featuring a chewy oat base, a creamy peanut butter filling, and a rich chocolate topping. No oven is required.

Ingredients

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  • 1 1/2 cups rolled oats
  • 1 cup creamy peanut butter
  • 1/2 cup unsalted butter, melted
  • 1/2 cup powdered sugar
  • 1 teaspoon vanilla extract
  • 1 cup semi-sweet chocolate chips
  • 1/4 cup creamy peanut butter (for topping)

Instructions

  1. Line an 8×8 inch baking pan with parchment paper, leaving an overhang on two sides for easy removal.
  2. In a medium bowl, combine the rolled oats, 1 cup of peanut butter, melted butter, powdered sugar, and vanilla extract. Mix until fully combined and the mixture is uniform.
  3. Press the oat mixture firmly and evenly into the bottom of the prepared pan. Place the pan in the freezer for 15 minutes to set.
  4. While the base sets, prepare the chocolate topping. In a microwave-safe bowl, combine the chocolate chips and the remaining 1/4 cup of peanut butter. Microwave in 30-second intervals, stirring well after each, until smooth and fully melted.
  5. Pour the chocolate mixture over the chilled oat base. Spread evenly.
  6. Return the pan to the refrigerator and chill for at least 2 hours, or until the chocolate topping is firm.
  7. Use the parchment paper overhang to lift the bars from the pan. Cut into 16 squares before serving.

Notes

  • For a firmer bar, chill the bars for 4 hours or overnight.
  • Store leftovers in an airtight container in the refrigerator for up to one week.
  • You can substitute almond butter for peanut butter if desired.

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