
If you’re craving a nostalgic, crunchy treat with a decadent twist, these Reese’s Peanut Butter Cup Rice Krispie Treats are a delicious fusion of chocolate and peanut butter. These cereal treats are inspired by the traditional Rice Krispie treats we all grew up with, but with the added indulgence of chunks of Reese’s, smooth peanut butter, and melted classic chocolate.
They’re a perfect example of how a simple recipe can become something truly special with just a few upgrades, like adding pb cups and a chocolate topping. This recipe is easy enough to whip up in no time and is bound to satisfy any sweet tooth.
Growing up, classic treats like Rice Krispie treats were always present at school events, family picnics, and church potlucks. The snap, crackle, and pop of the Rice Krispies cereal bring back memories of carefree afternoons and homemade goodies.
But what makes this recipe stand out is the rich, creamy addition of peanut butter and the candy-like finish of chunks of Reese’s Peanut Butter Cups. It’s a fusion of childhood comfort and chocolatey indulgence that makes this version of Rice Krispie treats one of the absolute best.

A Brief History of Rice Krispie Treats
Rice Krispie treats were originally created by Kellogg’s in 1939 as a clever way to promote their cereal. What started as a marketing tool turned into a dessert classic, and over time, the recipe appeared on cereal boxes across America. The simplicity of just butter, mini marshmallows, and cereal made it easy for families to whip up a batch of these delicious bars, cementing their place in American homes.
The original classic Rice Krispies treats are loved for their straightforward nature, but they’ve also proven to be incredibly versatile. Home cooks have put their own spins on the recipe for decades, experimenting with everything from corn syrup to chocolate chips and even different cereals. The version we’re making today is one of the most indulgent takes yet—Reese’s Rice Krispie treats with chunks of Reese’s Peanut Butter Cups and a rich chocolate topping.
Ingredients Breakdown
- Salted Butter: Butter gives the treats their rich base, and the salt helps balance out the sweetness of the marshmallows and chocolate. Always melt butter on low heat to avoid separating the fat.
- Mini Marshmallows: These are the foundation of gooey rice cereal treats. They melt down into a smooth, sticky mixture that holds everything together. Their quick melting makes them ideal for the recipe.
- Creamy Peanut Butter: The star of the show here, creamy peanut butter adds a smooth, nutty flavor that blends perfectly with the sweetness of the marshmallows. You could even try peanut butter chips for a fun variation.
- Vanilla Extract: A small but mighty ingredient, vanilla extract adds warmth and depth, enhancing the flavors of the marshmallows and peanut butter.
- Rice Krispies Cereal: The crispy base of these bars, Rice Krispies cereal gives that light, crunchy texture we all love. Find them in the cereal aisle of any grocery store.
- Milk Chocolate Chips: Melted milk chocolate chips create the rich, indulgent topping. Semi-sweet chocolate chips can add a slightly deeper, more balanced flavor, helping to offset the sweetness of the other ingredients.
- Coconut Oil: A bit of coconut oil helps the chocolate melt smoothly and gives the bars a glossy finish. You can substitute it with butter if you prefer.
- Reese’s Peanut Butter Cups: The unmistakable flavor of Reese’s Peanut Butter Cups takes these treats to the next level. Whether you use full-size cups or Reese’s minis, these pb cups add chunks of candy bar goodness to every bite.
- Sea Salt Flakes: A sprinkle of sea salt flakes on top adds a little contrast to the sweetness, elevating the flavor with a burst of savory goodness.
Equipment You’ll Need
- 13×9 Inch Pan: Perfect for making thick, chewy bars. Be sure to line it with parchment paper for easy removal.
- Parchment Paper: This prevents sticking and allows you to easily lift the treats out of the pan once they’ve set.
- Large Mixing Bowl: Essential for mixing the melted marshmallow and peanut butter mixture with the Rice Krispies cereal without crushing them.
- Microwave-Safe Bowl: For melting butter, marshmallows, and chocolate in short, controlled bursts. A large saucepan on the stovetop works just as well for those who prefer a more traditional method.
- Rubber Spatula: This will help you press the sticky mixture into the pan evenly and get all the marshmallow mixture off the sides of the bowl.

How to Make Reese’s Peanut Butter Cup Rice Krispie Treats
- Prepare the Pan: Line a 13×9 inch pan with parchment paper, leaving a little overhang on the sides for easy lifting later.
- Melt the Ingredients: In a large microwave-safe bowl, melt butter, mini marshmallows, and creamy peanut butter in 30-second intervals, stirring in between until smooth and gooey.
- Mix in the Cereal: Stir in vanilla extract, then gently fold in the Rice Krispies cereal until everything is evenly coated.
- Press into the Pan: Lightly grease your hands or spatula with nonstick spray and press the mixture into the prepared pan. Be sure to spread it evenly across the pan.
- Melt the Chocolate: In a separate heatproof bowl, melt the chocolate chips in the microwave in 30-second bursts. Stir in coconut oil for a glossy, smooth consistency.
- Top and Finish: Pour the melted chocolate over the Rice Krispie mixture, and then sprinkle chopped Reese’s Peanut Butter Cups or Reese’s minis on top. Finish with a sprinkle of sea salt flakes for added flavor contrast.
- Set the Bars: Let the bars set at room temperature for about two hours, or speed up the process by placing them in the refrigerator for about 30 minutes until firm.
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Chef Secrets
- Low Heat is Key: Always use low heat when melting marshmallows and butter to ensure the mixture stays soft and pliable. Overheating can make the mixture too stiff to work with.
- Add Coconut Oil to Chocolate: A small amount of coconut oil helps chocolate melt smoothly and gives it a professional, glossy finish. It also prevents the chocolate from hardening too quickly.
- Skip the Corn Syrup: Traditional recipes sometimes call for corn syrup, but this one keeps it simple while still delivering that perfect chewy texture.
- Cutting Tips: For clean cuts, let the bars cool completely and use a sharp knife dipped in hot water. Wipe the knife between cuts to avoid sticking.
Serving Suggestions
These perfect Rice Krispie treats are ideal for any gathering. Serve them alongside a scoop of vanilla ice cream for a true indulgence, or drizzle caramel sauce on top for an even richer treat. They also make a fantastic lunchbox surprise or after-school snack, guaranteed to please kids and adults alike.
Frequently Asked Questions
Can I use different cereals?
Yes! Try swapping out Rice Krispies for Cocoa Krispies or Cheerios for a fun variation on the classic.
Do I have to use coconut oil?
No, you can substitute butter for the coconut oil in the chocolate mixture. Coconut oil just helps the chocolate stay smooth and glossy.
How long do these treats last?
Stored in an airtight container, these treats can last up to five days at room temperature or up to two weeks in the refrigerator.
Storing Tips
To keep your candy bar-inspired treats fresh, store them in an airtight container.
If you plan to keep them longer, wrap them tightly in plastic wrap and store them in the freezer for up to three months. When you’re ready to enjoy them, thaw at room temperature or give them a quick zap in the microwave to soften the chocolate topping.
These chocolate peanut butter Rice Krispie treats are sure to become a favorite in your household, blending the nostalgic flavors of a childhood classic with the indulgence of peanut butter and chocolate. Whether for a special occasion or just because, these treats will be a hit every time!

More Rice Krispie Treat Recipes
- The BEST Rice Krispie Treats
- Strawberry Rice Krispie Treats
- Chocolate Rice Krispie Treats
- Fruity Fun Rice Krispie Treats
Reese's Peanut Butter Cup Rice Krispie Treats
Ingredients
- 1 stick salted butter
- 2-10 oz bag mini marshmallows
- 1 cup creamy peanut butter
- 1 teaspoon vanilla extract
- 8 cups Rice Krispie cereal
- 11.5 oz bag Milk chocolate chips
- 2 teaspoons coconut oil
- 8 Reese’s Peanut Butter Cups chopped (full-size)
- 1 teaspoon sea salt flakes
Instructions
- Prepare the Pan: Line a 13×9 inch pan with parchment paper, leaving some extra on the short sides for easy removal, or spray the pan with baking spray.
- Melt the Ingredients: In a large microwave-safe bowl, combine butter, mini marshmallows, and peanut butter. Microwave until melted.
- Mix the Base: Remove from the microwave, stir in vanilla extract, and then add the Rice Krispies, mixing until fully combined.
- Press into the Pan: Press the mixture evenly into the prepared pan using greased hands to prevent sticking.
- Melt the Chocolate: Place chocolate chips or chopped chocolate in a heatproof bowl. Microwave in 30-second intervals on medium power, stirring in between, until almost melted. Stir until smooth, then add coconut oil and mix well.
- Assemble the Topping: Pour the melted chocolate over the Rice Krispies mixture. Sprinkle with chopped Reese’s cups and a pinch of sea salt for extra flavor.
- Set the Bars: Let the bars set at room temperature for about 2 hours, or speed up the process by refrigerating them for 30 minutes until firm.
- Serve: Once hardened, cut the bars into squares and serve!
Nutrition
*Nutrition information is automatically calculated based on ingredient data and should be considered an estimate. When multiple ingredient options are provided, the first listed is used for calculation. Optional ingredients and garnishes are not included in the nutrition analysis.
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