15-Minute No-Bake Reese's Puffs Cereal Treats

Crispy peanut butter cereal bound with melted marshmallows and studded with chopped and whole Reese's cups. A simple, no-oven dessert that combines childhood cereal nostalgia with chocolate-peanut butter indulgence. Perfect for potlucks, lunchboxes, or when you need a quick sweet fix without baking. This version skips the stove entirely and layers texture with both mixed-in and pressed-on peanut butter cups for maximum flavor.
Ingredients
Instructions
- 1
Grease a cake pan or casserole dish with butter or line with parchment paper.
- 2
Combine butter and marshmallows in a large bowl.
- 3
Microwave in 30 second bursts, stirring between each, until butter melts and marshmallows soften, about 2-3 minutes total.
- 4
Stir well to combine.
- 5
Pour cereal into the butter-marshmallow mixture.
- 6
Mix gently until cereal is coated, avoiding overmixing.
- 7
Fold in chopped peanut butter cups.
- 8
Transfer to prepared pan and press evenly.
- 9
Arrange mini peanut butter cups across the top, pressing lightly into the mixture.
- 10
Cover with plastic wrap and refrigerate at least 30 minutes.
- 11
Cut into squares or desired shapes with a sharp knife.
Tips
Use salted butter for deeper flavor contrast with the sweet marshmallows and chocolate.
Cover with plastic wrap during chilling to prevent the treats from absorbing refrigerator odors.
Good to Know
Keep covered at room temperature up to 3 days, or refrigerated up to 1 week in an airtight container.
Prepare fully and refrigerate up to 5 days ahead. Cut just before serving to prevent drying.
Serve chilled or at room temperature. Cut into squares or fun shapes. Store extras covered to prevent staling.
Common Mistakes
Overmix the cereal to avoid crushing it into dust and losing crispness
Skip the plastic wrap to prevent odor absorption and surface drying during chilling
Substitutions
Dairy-Free Swaps
Vegan Options
General Alternatives
medium confidence
FAQ
Can I make this ahead?
Yes. Prepare fully, cover, and refrigerate up to 5 days. Cut just before serving to maintain texture and prevent edges from drying out.
What if I don't have mini marshmallows?
Cut regular marshmallows into quarters. They may take slightly longer to melt and blend less evenly, but will work fine.
How long do these keep?
Covered at room temperature, 3 days. Refrigerated in an airtight container, up to 1 week. They may firm up slightly when cold.