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No Bake Chocolate Peanut Butter Oatmeal Cookies Recipe

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4.2 from 14 reviews

These classic No Bake Cookies are rich, chocolatey, and loaded with creamy peanut butter and oats. Ready in under 20 minutes, they require no oven and are perfect for a quick and easy treat that hardens as it cools, delivering a chewy, satisfying texture.

Ingredients

Cookie Mixture

  • ½ cup salted butter (cut into Tablespoon-sized pieces)
  • ½ cup whole milk
  • 1 cup light brown sugar, firmly packed
  • 1 cup granulated sugar
  • ¼ cup cocoa powder
  • ⅔ cup creamy peanut butter
  • 1 ½ teaspoon vanilla extract
  • 3 cups instant/quick oats

Instructions

  1. Prepare Cookie Sheets: Line two cookie sheets with wax paper and set them aside to prepare for dropping the cookie mixture.
  2. Combine Ingredients: In a medium-sized saucepan over low heat, combine butter, whole milk, light brown sugar, granulated sugar, and cocoa powder. Keep the heat low to avoid improper mixing that could prevent the cookies from setting.
  3. Melt Butter: Stir frequently with a long wooden spoon until the butter is completely melted and the mixture is smooth.
  4. Boil Mixture: Increase the heat to medium and stir constantly, bringing the mixture to a boil.
  5. Boil for 1 Minute: Once boiling, continue stirring constantly for exactly 1 minute. Use a timer to avoid over or under-boiling, which can affect the texture and setting of the cookies. Then remove the pan from heat and keep stirring for a few more seconds.
  6. Add Peanut Butter and Vanilla: Stir in the creamy peanut butter and vanilla extract until the peanut butter is fully melted and incorporated into the chocolate mixture.
  7. Add Oats: Fold in the instant/quick oats and stir until all oats are evenly coated with the chocolate-peanut butter mixture.
  8. Drop Cookies: Using a spoon, drop spoonfuls roughly 1 ½ to 2 tablespoons each onto the prepared wax paper-lined cookie sheets.
  9. Cool and Set: Let the cookies cool for approximately 20-30 minutes. As they cool, they will harden properly and be ready to serve.

Notes

  • Use a long wooden spoon to stir to avoid burning your hands as a metal spoon can get very hot.
  • Do not turn up the heat to speed cooking as this can affect the texture and consistency of the cookies.
  • Boiling exactly for 60 seconds is crucial to ensure the cookies set correctly; use a timer to monitor.
  • Use instant or quick oats for the best texture and binding; old-fashioned rolled oats may alter the final texture.
  • Allow cookies to cool completely before serving to ensure they harden properly.