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Peanut Butter Rice Krispies® Brownies

Rated as 4.5 out of 5 Stars

"A soft fudge brownie layered with peanut butter and topped with a Rice Krispies® treat. Serve cooled or at room temperature. Great for parties!"
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1 h 20 m servings 384
Original recipe yields 16 servings (16 brownies)


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  1. Preheat oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking dish.
  2. Beat brownie mix, vegetable oil, water, and 2 eggs in a bowl until batter is smooth.
  3. Whisk flour, baking powder, and salt together in a small bowl.
  4. Beat peanut butter, brown sugar, and 2 tablespoons butter together in another bowl with an electric mixer until light and creamy. Beat 1 egg and vanilla into peanut butter mixture until fluffy. Stir flour mixture into peanut butter mixture until just blended.
  5. Pour brownie batter in the prepared baking dish. Drop peanut butter mixture by small spoonfuls over the brownie batter.
  6. Bake brownies in the preheated oven until a toothpick inserted in the center of the brownies comes out clean, about 30 minutes; cool.
  7. Melt 1/4 cup butter in a large saucepan over medium heat; add marshmallows and stir until marshmallows are melted. Cook mixture until butter and marshmallow flavors are combined, about 2 minutes; remove from heat.
  8. Spread 1/3 the marshmallow mixture over the cooled brownies. Stir crispy rice cereal into remaining 2/3 the marshmallow mixture; press in an even layer on top of the brownies. Refrigerate until set, about 15 minutes; cut into squares.


  • Cook's Note:
  • You can 'marble' the brownies by running a knife through the spoonfuls of peanut butter mixture into the brownie batter.

Nutrition Facts

Per Serving: 384 calories; 19.8 49.1 5.8 47 291 Full nutrition

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Read all reviews 4
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Okay… this was an amazing recipe!! A few substitutions though. After making brownies, I topped with a thin marshmallow fondant layer, then I used a peanut butter Krispy treats recipe to do the t...

these were delicious- and made a little different with the Krispy layer. My family loved them! I think there are a couple of mistakes though in the ingredient list. In the ingredients for the b...

By mistake, I baked the brownies separately, then put the pan back in the oven after I added the peanut butter layer. I think that worked out better because it allowed the brownie layer to bake ...

Seemed like a lot of trouble and dishes but the results were wonderful. Talk about mixing two classics-its worth a try!