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Easy 5-Ingredient No-Bake Peanut Butter Protein Bars

Three homemade protein bars made with oats and topped with drizzled chocolate, resting on a white rectangular plate.

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Make these simple, high-protein bars at home. This no-bake recipe uses five basic ingredients to create chewy, satisfying snacks perfect for meal prep or quick energy.

Ingredients

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  • 1 cup rolled oats
  • 1/2 cup natural peanut butter
  • 1/2 cup protein powder (vanilla or unflavored)
  • 1/4 cup honey or maple syrup
  • 1/4 cup dark chocolate chips (optional topping)

Instructions

  1. Line an 8×8 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
  2. In a large bowl, combine the rolled oats, protein powder, and peanut butter.
  3. Pour in the honey or maple syrup.
  4. Mix all ingredients thoroughly until a thick, uniform dough forms. If the mixture is too dry, add one teaspoon of water at a time until it holds together.
  5. Press the mixture firmly and evenly into the prepared pan. Use the back of a measuring cup to flatten the surface.
  6. If using, melt the chocolate chips slightly and spread them evenly over the top layer.
  7. Place the pan in the refrigerator and chill for at least 2 hours, or until the bars are firm.
  8. Use the parchment paper overhang to lift the block out of the pan. Cut into 10 to 12 equal bars.
  9. Store the homemade protein bars in an airtight container in the refrigerator for up to one week.

Notes

  • For a vegan option, ensure you use maple syrup instead of honey and a plant-based protein powder.
  • If you want a richer chocolate flavor, use chocolate protein powder instead of vanilla.
  • These bars are excellent for meal prep; they hold their shape well when kept cool.

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