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Three squares of colorful peanut butter marshmallow squares are stacked on a white plate. This easy no bake dessert features pastel mini marshmallows and peanut butter fudge, set against a neutral kitchen background.
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5 from 3 votes

Peanut Butter Marshmallow Squares

Peanut Butter Marshmallow Squares are chewy, sweet, peanut-buttery perfection — one of those easy no bake desserts that takes no time at all but tastes like pure nostalgia.
Prep Time5 minutes
Cook Time10 minutes
Refrigerate1 hour 30 minutes
Total Time1 hour 45 minutes
Course: Dessert, no bake dessert
Cuisine: American
Keyword: Easy No Bake Desserts, No Bake Desserts, peanut butter marshmallow squares
Servings: 16 squares

Ingredients

  • 1 300 gram bag butterscotch chips
  • 1 cup peanut butter smooth
  • 1/2 cup butter unsalted
  • 1 250 gram bag mini marshmallows rainbow
  • 1 tsp vanilla extract

Instructions

  • Place the mini marshmallows in the freezer for 35-45 minute before preparing this recipe. This will help the marshmallows hold their shape and avoid melting when added to the butterscotch and peanut butter mixture.
  • Line an 8x8 or 9x9 inch pan with parchment paper and set aside.
  • To a large pot set to low/medium heat add your butterscotch chips and begin melting, stirring often to avoid burning.
  • Once the butterscotch chips are about 75% melted (which will take about 2-3 minutes), add your peanut butter and let cook for another 2 minutes on low heat, stirring often.
  • Add your butter and vanilla and continue to stir on low heat until everything is incorporated and smooth.
  • Remove mixture from heat and let cool for 5 minutes.
  • Grab the marshmallows from the freezer and add them to the peanut butter mixture. 
    Gently fold the ingredients together until fully incorporated.
  • Pour into your prepared baking dish, spread evenly, cover with plastic wrap and refrigerate for at least 1½ hours, or overnight.
  • Slice, serve and enjoy.

Nutrition

Calories: 148kcal | Carbohydrates: 4g | Protein: 4g | Fat: 14g | Saturated Fat: 5g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Trans Fat: 0.2g | Cholesterol: 15mg | Sodium: 115mg | Potassium: 93mg | Fiber: 1g | Sugar: 2g | Vitamin A: 177IU | Calcium: 10mg | Iron: 0.3mg
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