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Peanut Butter Marshmallow Squares

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Butterscotch desserts are one of the most underrated desserts there is. It’s like a mix between chocolate and caramel and just tastes so delicious. Want to know what makes this butterscotch dessert extra special? It’s no-bake!

Peanut Butter Marshmallow Squares

These peanut butter marshmallow bars feature tons of butterscotch flavour, along with creamy peanut butter and fluffy marshmallows.

They are full of flavour but don’t require any fancy cooking methods or equipment, and they truly are the best homemade peanut butter marshmallow squares.

Follow the recipe below and make sure to read through the frequently asked questions to make one of the best recipes with marshmallows and peanut butter.

Peanut Butter Marshmallow Squares

INGREDIENTS

  • 2 cups butterscotch chips
  • 1 cup smooth peanut butter
  • 4 tbsp unsalted butter
  • ½ tsp vanilla extract
  • Pinch of salt
  • 1 (10. Oz) bag mini marshmallows (rainbow or regular)

HOW DO YOU MAKE PEANUT BUTTER MARSHMALLOW SQUARES?

  • Step 1: Prepare an 8-inch square baking pan by spraying with cooking spray and lining with parchment paper

Peanut Butter Marshmallow Squares

  • Step 2: In a glass bowl in the microwave, melt butterscotch chips and peanut butter together until smooth, stirring in between

Peanut Butter Marshmallow Squares

  • Step 3: Stir in the vanilla and pinch of salt and allow the mixture to cool to room temperature
  • Step 4: Once cooled, stir in marshmallows and mix till combined

Peanut Butter Marshmallow Squares

  • Step 5: Pour mixture into prepared pan and refrigerate until set (about 2 hours)

Peanut Butter Marshmallow Squares

  • Step 6: Cut chilled bars into squares and serve

CAN PEANUT BUTTER MARSHMALLOW FLAVOURS BE FROZEN?

These bars are great to keep frozen and grab anytime a craving hits. Place chilled bars in an air-tight container or ziploc bag and freeze for up to 3-months. Remove from freezer and allow to come to room temperature prior to serving.

HOW LONG DO PEANUT BUTTER MARSHMALLOW SQUARES LAST?

Peanut butter marshmallow squares will last covered at room temperature or in the fridge for 3-5 days. If frozen, they will last for up to 3-months.

HOW TO STORE PEANUT BUTTER MARSHMALLOW SQUARES?

Chilled bars can either be kept covered at room temperature or in the fridge. Place chilled bars in either an air-tight container or sealed Ziploc bag to store. Make sure they are covered to prevent the marshmallows from going stale.

Peanut Butter Marshmallow Squares

OTHER RECIPES YOU MIGHT ENJOY

  • CRANBERRY SHORTBREAD BARS
  • THE BEST COCONUT SNOWBALLS
  • WICKEDLY GOOD WHOOPIE PIES
  • CREAM CHEESE SAUSAGE BALLS
Peanut Butter Marshmallow Square

Peanut Butter Marshmallow Squares

These peanut butter marshmallow bars feature tons of butterscotch flavor, along with creamy peanut butter and fluffy marshmallows.
5 from 2 votes
Print Save Rate
Course: Dessert
Cuisine: American
Prep Time: 5 minutes
Total Time: 2 hours 20 minutes
Servings: 16

Ingredients

  • 2 cups butterscotch chips
  • 1 cup smooth peanut butter
  • 4 tbsp unsalted butter
  • ½ tsp vanilla extract
  • Pinch of salt
  • 1 (10. Oz) bag mini marshmallows (rainbow or regular)

Instructions

  • Prepare an 8-inch square baking pan by spraying with cooking spray and lining with parchment paper
  • In a glass bowl in the microwave, melt butterscotch chips and peanut butter together until smooth, stirring in between
  • Stir in the vanilla and pinch of salt and allow the mixture to cool to room temperature
  • Once cooled, stir in marshmallows and mix till combined
  • Pour mixture into prepared pan and refrigerate until set (about 2 hours)
  • Cut chilled bars into squares and serve
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