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ow Krispie topped brownies stacked on a white cake plate

Peanut Butter Rice Krispie Brownies

These Peanut Butter Rice Krispie Brownies are the perfect sweet treat! Rich brownies topped with marshmallow and peanut butter chocolate Krispie treats.
4.58 from 26 votes
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Prep Time 10 minutes
Cook Time 30 minutes
Additional Time 2 hours
Total Time 2 hours 40 minutes
Servings 16 servings

Equipment

Ingredients

Instructions

  • Preheat oven to temperature directed on brownie package.
  • Line a 9x13 pan with parchment paper.
  • Prepare brownies according to box directions.
  • 4 minutes before the brownies are fully cooked, pull brownies from the oven, and add marshmallows on the top.
  • Return to oven for 4 minutes to soften marshmallows.
  • Remove from oven and spread marshmallows over the top of brownies. Let cool completely.
  • In a microwave-safe bowl combine chocolate chips, peanut butter, and butter.
  • Heat on high for 30 seconds.
  • Stir and repeat until chocolate is melted and the mixture is smooth.
  • Add cereal and stir to combine.
  • Drop spoonfuls of chocolate mixture over the marshmallow layer, spreading as evenly as possible.
  • Put the brownies in the refrigerator for at least 2 hours to chill.
  • Lift from pan and cut into squares.

Video

Notes

  • Do not cut the brownies before the topping has set up. They will not hold together properly, resulting in a sticky mess.
  • Use whatever brownie mix is your favorite. 
  • Brownie mixes can vary in size, but you want something around 18 ounces. Anything from 17-20 ounces will work. 
  • Lining the pan with parchment paper will help you life the brownies out of the pan and make it easier to cut and not stick. 

Nutrition

Serving: 1g | Calories: 251kcal | Carbohydrates: 24g | Protein: 5g | Fat: 16g | Saturated Fat: 6g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Trans Fat: 0.1g | Cholesterol: 7mg | Sodium: 81mg | Potassium: 180mg | Fiber: 2g | Sugar: 14g | Vitamin A: 73IU | Calcium: 18mg | Iron: 1mg
Course Dessert
Cuisine American
Keyword boxed brownie recipe, layered brownies, marshmallow brownies, peanut butter brownies, rice krispie treat recipe
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