Rich and decadentPeanut Butter S’mores Barsmade with a simple cookie-dough-graham-cracker crust, peanut butter, chocolate, and marshmallow creme. They have the perfect ratio of crunch to gooeyness, sweet to savory, and crust to crumble.

tan and white peanut butter s'mores bars on a brown cutting board on top of a white towel with a hand pulling off one bar.

Some desserts will change your life forevermore. Any dessert with peanut butter and chocolate could end up on that list of perfection, which is why desserts likeno-bake peanut butter barsandchocolate peanut butter pieare on my go-to summer meal plan. But the thing that really makes these bars stand out is the deliciouslyfun spin on regular s’mores.

S’mores desserts always bring me back to childhood memories of camping with family, telling stories and jokes around a fire, and capping off an outdoorsy evening with a sticky and sweet bite of graham cracker, chocolate, and toasted marshmallow. When I want to recreate that nostalgic feeling in the comfort of my home, thesePeanut Butter S’mores Barsdo a fabulous job of taking me back in time.

tan and white cookie bars on a brown cutting board on top of a white towel with a brown-handled knife on the board.

Why You’ll Love This Recipe

A deliciously fun spin on regular s’mores!
Aneasy and yummydish for summer potlucks.
Make-ahead dessert that keeps well in the fridge.

Recipe Ingredients

Butter
Sugar –regular granulated sugar and brown sugar
Egg
Vanilla
Flour –basic all-purpose flour
Baking powder
Graham crackers –grab graham cracker crumbs at the store to save a step!
Peanut butter
Chocolate chips –either semi-sweet or milk chocolate
Marshmallow Fluff –don’t skip this important s’mores ingredient!

See the recipe card below for full information on ingredients and quantities.

tan and white cookie bars on a brown cutting board on top of a white towel with a hand pulling off one bar.

Popular Substitutions and Variations

To do a no-bake version, use a store-bought graham cracker pie crust and crumbled graham cracker as the topping instead of the cookie dough in this recipe.

In my opinion, the cookie dough crust is one of the best parts of this recipe, and baking melds together the chocolate, peanut butter, and marshmallow fluff components into a heavenly melt.If you have the time, it’s worth the bake.

How to Make Peanut Butter S’mores Bars

Mix the cookie dough ingredients and add the graham cracker crumbs, pressing part of this into the baking dish.
Spread peanut butter over the top, and then add chocolate chips.
Add Marshmallow Fluff and top with the rest of the dough mixture.
Bake and allow to cool before cutting.

Recipe FAQs

Are Peanut Butter S’mores Bars a no-bake recipe?

No, you need to bake these because the cookie dough crust and topping have egg.

How long do Peanut Butter S’mores Bars keep?

These will keep in the fridge for up to a week if covered. Storing them in the fridge will also make the sticky elements easier to cut through when serving!

Can you replace the peanut butter with another type of nut butter?

Definitely. This is a really great idea for those with peanut allergies, especially. You shouldn’t have to miss out on the tastiness of these bars! My biggest tip, however, is to find a nut butter with a similar thickness and consistency to peanut butter. A lot of almond butters would be too runny, but I’ve found some cashew butters that are similar in thickness to PB. Give your jar a flip, and if the butter moves at all, it’s probably going to be too runny for this recipe.

tan and white cookie bars in a pan on top of a blue towel.

Expert Tips

The easiest way to cut these sticky bars is by placing them in the fridge for an hour after baking.They will be less sticky, and you can get a cleaner cut.
If you’d like to make these bars ahead of time, just make and bake as per the recipe and then store them in the refrigerator forup to a week.
Use either semisweet or milk chocolate chips, whichever your family prefers or you have on hand.