Description

These Marshmallow Peanut Butter Squares are a no-bake, chewy treat combining creamy peanut butter, sweet butterscotch chips, and colorful fruity mini marshmallows. Easy to prepare and perfect for snack time or dessert, these squares offer a delightful mix of flavors and textures with minimal effort.

Ingredients

Scale

Wet Ingredients

½ cup unsalted butter
1 cup creamy peanut butter (Peter Pan brand recommended)
1 teaspoon vanilla extract

Dry Ingredients

11 ounces butterscotch chips (Nestle Toll House brand recommended)
10 ounces fruity-flavored mini marshmallows (Jet-Puffed brand recommended)

Instructions

Prepare the Pan: Line an 8×8 inch straight-sided baking pan with parchment paper, ensuring there is enough overhang on the sides to easily lift the bars out later. Lightly spray the parchment paper with non-stick baker’s spray to prevent sticking.
Melt Ingredients: In a 3½ to 4 quart saucepan over medium-low heat, combine the unsalted butter, creamy peanut butter, and butterscotch chips. Stir continuously until all are melted and the mixture is smooth and well combined.
Add Vanilla and Cool: Stir in the vanilla extract, then remove the saucepan from heat. Allow the mixture to cool for 2 to 3 minutes; this step ensures the mini marshmallows won’t fully melt when added.
Combine with Marshmallows: Place the mini marshmallows in a large mixing bowl. Pour the slightly cooled peanut butter mixture over the marshmallows, and gently fold everything together until all the marshmallows are evenly coated.
Transfer to Pan: Pour the combined mixture into the prepared baking pan and spread it evenly using a spatula or the back of a spoon.
Chill: Refrigerate the mixture for 1½ to 2 hours or until the squares are completely firm and set.
Remove Bars: Once chilled, carefully lift the peanut butter bars out of the pan using the overhanging parchment paper and place them onto a large cutting board.
Slice into Squares: Using a large sharp knife, slice the bars into 16 equal squares. For smooth cuts, you can run the knife under hot water and wipe it clean between slices.

Notes

Be sure to allow the peanut butter mixture to cool slightly before adding marshmallows to prevent them from melting completely.
Use parchment paper with overhang to easily remove the bars without breaking them.
Running the knife under hot water before slicing helps achieve cleaner cuts.
Store leftovers in an airtight container in the refrigerator to keep firm.
Optional: Substitute butterscotch chips with white chocolate chips for a different flavor variation.

Prep Time: 10 minutes
Cook Time: 10 minutes
Category: Dessert
Method: Stovetop
Cuisine: American

Keywords: Marshmallow Peanut Butter Squares, no bake dessert, peanut butter treats, butterscotch, mini marshmallows, easy dessert