Peanut Butter Smores Bars are the perfect dessert whether you are at a campfire, hosting a dinner party, or throwing a birthday party. And these Peanut Butter S’mores Bars have every ingredient you need to make a satisfying dessert. It is soft and chewy, and makes you think of childhood!

I need a chocolate in my dessert to feel satisfied. So I am always on board to add a dash of chocolate chips here or a sprinkle of chocolate sprinkles there. I tend to pick my desserts based on their chocolatey-factor, and these definitely deliver! These Peanut Butter S’mores Bars have an evenly distributed layer of chocolate chips that are complemented by the marshmallow and peanut butter. This dessert includes two classic combinations, chocolate & peanut butter, and chocolate & marshmallow. How could this get any better?

Well, what if I told you that this is a freezable recipe! To freeze the bars, cool them completely but do not cut them into individual servings. Wrap the portion you want to freeze tightly in plastic wrap, then wrap in tin foil again. The bars will last in the freezer for up to 3 months. When you are ready to serve them again, thaw at room temperature before cutting into individual servings. This will reduce waste and help you portion size your dessert.

This recipe can also be made gluten-free if you substitute the regular all-purpose flour for gluten-free all-purpose flour.

If this recipe got you in the mood to work on your baking skills, try our Black Bean Brownies next!

Peanut Butter S'mores Bars

Chocolate and peanut butter is the way to an RBA dietitian's heart. Adding marshmallows to the mix just makes it even better!
Cook Time40 minutes
Total Time40 minutes
Course: Desserts
Cuisine: American, Fun With Food
Keyword: Fall, Holiday, Party, Winter
Cooking Method: Oven
Condition: Vegetarian
Servings: 12 bars


  • 2/3 cup peanut butter
  • 2 egg
  • 1 cup butter softened
  • 1 cup brown sugar
  • 3/4 cup sugar
  • 1 tsp baking soda
  • 1 tsp vanilla extract
  • 3 cups all-purpose flour
  • 1 cup chocolate chips
  • 1 cup peanut butter chips
  • 1 3/4 cup marshmallows mini


  • Preheat oven to 350°F and grease an 9 x 13 pan.
  • In a large bowl, combine the peanut butter, eggs and butter and stir until smooth.
  • Add in the brown and white sugar, baking soda and vanilla. Mix well.
  • Add in flour and stir. Then the chocolate and peanut butter chips. And lastly, the marshmallows.
  • Bake in the oven for 30-40 minutes. It may be slightly soft and gooey, but the bars will set while cooling.


Carbohydrates: 81g | Protein: 13g | Fat: 33g | Sodium: 366mg | Potassium: 166mg | Fiber: 2g

Please let us know what you think of our Smores Bars in the comments section below.  Did you know that our dietitians create, prepare and photograph all the recipes on this blog?


Please note:

Nutrition info is an estimate and may contain errors.

Rebecca Bitzer loves to empower Registered Dietitian Nutritionists (RDNs) and their clients.  Co-author of Welcome to the Rebelution: Seven steps to the nutrition counseling practice of your dreams and  Taste the Sweet Rebellion: Rebel against dieting.