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Close up photo of a woman's hand holding a peanut butter s'mores bar.
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Peanut Butter S'mores Bars

Peanut Butter S'mores Bars are an easy dessert recipe made with graham crackers, peanut butter cookies, marshmallows, chocolate, and candy!
Prep Time5 mins
Cook Time13 mins
Total Time18 mins
Course: Dessert
Cuisine: American
Servings: 24 people
Calories: 274kcal


  • 24 graham cracker squares
  • 24 pack Reeses Ready To Bake Peanut Butter Cookies
  • 2 cups mini marshmallows
  • 24 Hershey Bar pieces
  • 1 cup Reeses Pieces
  • 1/4 cup mini chocolate chips


  • Preheat oven to 350°F and line a baking sheet with parchment paper.
  • Arrange the graham cracker squares on the parchment-lined baking sheet. Make sure you break the graham cracker into squares and don't leave them as whole rectangles.
  • Place one unbaked ready-to-bake cookie on each square and flatten them slightly before baking for 6 minutes.
  • Remove from oven and add the marshmallows, candy, and chocolate chips and bake an additional 6 to 7 minutes. Remove from oven and pull apart to eat.


  • Store S'mores Bars in an air-tight container for up to 2 days.
  • For even more toasted marshmallows, broil for about 1 minutes at the end of baking.
  • Variations Of Peanut Butter S’mores Bar Recipe: 

    • Chocolate Chip Cookies: Use ready-to-bake chocolate chip cookie dough instead of peanut butter cookies if you have a nut allergy or prefer that flavor.
    • M&M’s: If you’re not a fan of Reese’s pieces, you can use mini chocolate chips, peanut butter chips, or M&Ms instead. 
    • Sugar Cookies: Use ready-to-bake sugar cookies instead of peanut butter and use white chocolate and sprinkles on the top for a fun Birthday Cake-like version!
    • Caramel: Drizzle with caramel for even more gooeyness!
    • Nuts: Sprinkle the top of the cookie dough with chopped nuts before adding the marshmallows for added crunch!


Calories: 274kcal | Carbohydrates: 40g | Protein: 4g | Fat: 11g | Saturated Fat: 5g | Cholesterol: 6mg | Sodium: 220mg | Potassium: 41mg | Fiber: 2g | Sugar: 26g | Vitamin A: 4IU | Calcium: 22mg | Iron: 1mg