Peanut Butter Marshmallow Squares
These Peanut Butter Marshmallow Squares are an easy old-fashioned no-bake treat made with just 3-ingredients and 5 minutes of prep!
Peanut Butter Marshmallow Squares are an easy old-fashioned no-bake treat that’s made with just 4 ingredients and 5 minutes of prep! Bring these gourmet goodies to all of your holiday parties!

All About These No Bake Peanut Butter Marshmallow Squares
Peanut Butter Marshmallow Squares are a gourmet treat that everyone will devour in no time! This easy-to-make indulgent dessert is one you may have enjoyed in your childhood.
But whether they’re nostalgic or new, you’ll be smitten with the decadent flavors and smooth textures of this dessert! These are great for parties since they’re a grab-and-go treat that you can munch on while you still mingle!
They also make beautiful gifts for hostesses! Just stack a few squares in a Mason jar and add a ribbon. You can also attach a recipe card because they’re going to want it!

Ingredients for Peanut Butter Marshmallow Squares
Salted Butter
Butterscotch Chips
Creamy Peanut Butter
Mini Marshmallows

How To Make Peanut Butter Marshmallow Squares
1. Line a baking pan with foil and then spray it with nonstick cooking spray and set it aside.
2. Combine the butter, butterscotch chips, and peanut butter in a saucepan over medium heat. Cook the mixture only until it becomes melted and smooth.
3. Remove the pot from the heat and fold in the marshmallows.
4. Transfer the mixture into the prepared baking pan and top it with the remaining marshmallows. Afterwards, allow the peanut butter bars to set.
5. Cut the bars into squares and enjoy!
Storage Instructions
Keep these no-bake squares in an airtight container in the refrigerator. Enjoy the dessert bars for up to 2 weeks!


More Dessert Bar Recipes
- Graham Cracker Bars – Made with only six ingredients in just 30 minutes!
- Chocolate Chip Cheesecake Bars – Uses refrigerated cookie dough for an easy dessert!
- Easy Millionaire Shortbread Bars (From Scratch) – Three layers of sweet goodness!
- Oreo Magic Bars (7 Layer Bars) – Loaded with Oreo cookies, chocolate, coconut, M&Ms and more!
- Golden Grahams S’mores Bars – An easy, crunchy, chewy no bake treat!
Steps
Line a 9x9-inch baking pan with aluminum foil and spray with nonstick spray and set aside.
Combine the butter, butterscotch chips, and peanut butter in a medium saucepan and cook over medium heat just until melted and smooth.
Remove from heat and fold in 3 cups of the marshmallows. Pour the mixture into the prepared baking pan, top with the remaining marshmallows and allow to set.
Cut into squares and enjoy. Store in an airtight container for up to 2 weeks in the refrigerator.
Nutrition
- Calories168
- Carbs20g
- Protein2g
- Fat9g
- Saturated fat3g
- Sugar15g
- Sodium138mg
Estimates per serving, when a serving size is listed.
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