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Close-up of stacked Reese's Peanut Butter Rice Krispie Treats with a glossy chocolate top and peanut butter cups.

Reese's Peanut Butter Rice Krispie Treats

These indulgent Reese's Peanut Butter Rice Krispie Treats feature a chewy marshmallow-PB base, a creamy peanut butter center, and a thick milk chocolate ganache topped with chopped peanut butter cups.
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Prep Time 20 minutes
Cook Time 10 minutes
Total Time 30 minutes
Servings: 16 bars
Course: Desserts, Snacks
Cuisine: American
Calories: 385
Ingredients Equipment Method Notes

Ingredients
  

Main Ingredients
  • 6 cups puffed rice cereal approx 180g
  • 10 oz mini marshmallows 283g
  • 1/2 cup unsalted butter 115g
  • 1/2 cup creamy peanut butter 128g
  • 1 tsp vanilla extract 5ml
  • 1/4 tsp sea salt 1.5g
  • 1/2 cup creamy peanut butter 128g, slightly warmed
  • 1.5 cups milk chocolate chips 255g
  • 1/2 cup heavy cream 120ml
  • 1 cup Reese's Peanut Butter Cups coarsely chopped
  • 1 tbsp peanut butter melted for drizzle

Equipment

  • 1 9x9-inch Square Baking Pan
  • Parchment Paper For easy removal
  • 1 Large heavy-bottomed pot
  • 1 Offset spatula For smoothing layers

Method
 

Prepare the Base
  1. In a large pot over low heat, melt the butter. Add the marshmallows and 1/2 cup peanut butter, stirring until completely smooth and melted.
  2. Remove from heat. Stir in vanilla and sea salt, then fold in the puffed rice cereal until evenly coated.
  3. Transfer the mixture to a parchment-lined 9x9 inch pan. Press lightly to level the surface without crushing the cereal.
The Peanut Butter Layer
  1. Spread the remaining 1/2 cup of warmed peanut butter over the cereal base in a thin, even layer using an offset spatula.
The Ganache and Finishing
  1. Place chocolate chips in a bowl. Heat heavy cream until simmering, then pour over chocolate. Let sit for 5 minutes, then whisk until glossy.
  2. Pour the ganache over the peanut butter layer and spread to the edges.
  3. Top with chopped peanut butter cups and a drizzle of melted peanut butter. Let set before slicing into squares.

Notes

For the cleanest cuts, refrigerate the bars for 30 minutes before slicing with a hot knife.
Use processed peanut butter (like Jif) rather than natural varieties for better structural stability.