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Peanut Butter Krispie Brownies on white plates

Peanut Butter Krispie Topped Brownies

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Triple the decadence with a batch of these irresistible Peanut Butter Krispie Topped Brownies!

These Peanut Butter Krispie Brownies have three tasty layers: brownies, marshmallows and chocolate, peanut butter rice krispies!

Peanut Butter Krispie Topped Brownies on white plates viewed from the side

Peanut Butter Krispie Topped Brownies

After yoga practice this week, a friend asked me if I had ever made bars with the following ingredients: brownies, marshmallows, Rice Krispies and peanut butter. She described these as utterly decadent, so I whipped up half a batch of these Peanut Butter Krispie Topped Brownies to test them out myself.

She was spot on. I used my Fudgy Chocolate Brownies for this trial run…soooooo good!!!!

Peanut Butter Krispie Brownies on white plates

 Peanut Butter Krispie Brownies!

Beware that these layered brownies don’t slice into picture-perfect squares. The marshmallows are super sticky. I didn’t try freezing them before cutting, but that certainly could help or use a hot dry knife.

I always line my baking pans with non-stick foil to assist in removing sticky treats from the pan…but from there, things went downhill. Not in flavor but in trying to cut the perfect bar!

But I don’t think anyone will complain a little chocolate goo on the marshmallow layer after taking their first nibble. I need to hide these babies before I eat them all!  These Peanut Butter Krispie Topped Brownies will surely become a new family favorite treat!

If you love this flavor profile, these chocolate peanut butter no-bake cookies will also please your palate! Or these Peanut Butter Truffle Brownies. Check out all my Brownie Recipes, too.

Peanut Butter Krispie Brownies on white plates

Peanut Butter Krispie Topped Brownies

Rich brownies layered with marshmallows and chocolate peanut butter Rice Krispies!

Prep Time 30 minutes
Cook Time 42 minutes
Total Time 1 hour 12 minutes
Yield 12 brownies



  • 1 stick butter
  • 8 ounces semi-sweet chocolate, chopped
  • 1 1/2 cups sugar
  • 4 eggs
  • 1 teaspoon vanilla
  • 3/4 cup flour
  • 1/4 teaspoon salt


  • 2 cups mini-marshmallows
  • 8 ounces semi-sweet chocolate, chopped
  • 1 cup peanut butter
  • 2 tablespoons butter
  • 2 cups Rice Krispies cereal


  1. Line 9 x 13 inch pan with greased foil or parchment. Preheat oven for brownies.Melt butter and chocolate till melted in a large microwave safe bowl. Mix in sugar and allow to cool slightly. Mix in eggs and vanilla till well blended. Add flour and salt and mix till just combined Bake for 40 minutes.
  2. Remove from oven and sprinkle with marshmallows. Return to oven for 2 minutes. Remove to cooling rack, and cool completely.
  3. In microwave safe bowl, heat another 8 ounces of chocolate, peanut butter and butter for 30 seconds. Stir and repeat till chocolate is melted and mixture in smooth. Add cereal and fold in gently till cereal is coated. Drop mixture on top of marshmallows. Carefully spread to coat top of bars evenly.
  4. Cool in fridge for a few hours. Remove from pan using parchment. Score and cut.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 586Total Fat: 33gSaturated Fat: 15gTrans Fat: 0gUnsaturated Fat: 15gCholesterol: 87mgSodium: 281mgCarbohydrates: 71gFiber: 4gSugar: 52gProtein: 10g


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4 comments on “Peanut Butter Krispie Topped Brownies”

  1. Here is a recipe for a similar treat! They are AMAZING!

  2. Anna, those look incredible! Thanks for sharing 🙂

  3. Thanks for stopping by, Christie…I’m going to send you some restaurant suggestions 🙂

  4. Oooh, you’re such an inspiration. I love this blog!

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