Peanut Butter S’mores Bars
Updated July 30, 2024
Quick Summary
Peanut Butter S’mores Bars are made with a graham cracker cookie crust, marshmallow, peanut butter, and peanut butter cups! These easy s’mores bars are a fun treat for the whole family!
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S’mores are always a good idea, especially during the summer months. My favorite way to eat a s’mores…graham cracker, toasted marshmallow, and a peanut butter cup! The peanut butter cup is a game changer, trust me! Have you tried it?
Let me introduce you to Peanut Butter S’mores Bars! Oh, yes, I took my favorite s’mores combo and turned it into a fun bar treat you can make in the oven, without a campfire!
These easy s’mores bars are a family favorite dessert. The bars are made with a simple graham cracker cookie crust, a layer of marshmallow creme, creamy peanut butter, and then the bars get topped with lots peanut butter cups and another layer of graham cracker cookie dough. Oh, and sprinkle of sea salt, to bring the sweet and salty together. S’mores HEAVEN!
Table of Contents
How to Make Peanut Butter S’mores Bars
- Line a 9×13-inch pan with parchment paper and spray with nonstick cooking spray. This will make it easier to take the bars out of the pan after they have cooled.
- You will need 2 cups of crushed graham cracker crumbs. You can make graham cracker crumbs in the food processor or you can place graham crackers in a large plastic bag with a zip top and crush them with a rolling pin. You will need 16 full sheet graham crackers to make 2 cups graham cracker crumbs.
- Whisk together the crushed graham cracker crumbs, flour, baking powder, and salt.
- In the bowl of a stand mixer, beat the butter and brown sugar until light and fluffy, about 2 minutes. Beat in the eggs and vanilla until well combined.
- Add the dry ingredients and mix on low until just combined.
- Divide the dough in half. Press half into the bottom of the prepared pan until the dough is evenly flattened. If the dough is sticky, you can spray your hands with nonstick cooking spray to help or get them slightly damp.
- You will need a 7-ounce jar of marshmallow creme, PLUS ½ cup, so buy 2 jars. DON’T USE REGULAR MARSHMALLOWS. They won’t melt and get gooey like marshmallow creme.
- Dollop the marshmallow fluff on top of the cookie dough base and spread into an even layer with a spatula.
- Place the peanut butter in a small microwave safe bowl and heat for 30 seconds. Stir the peanut butter and drizzle over the marshmallow topping. Place the peanut butter cups, in rows, over the marshmallow fluff and peanut butter.
- Gently flatten and press the remaining dough over the top of the peanut butter cups, doing your best to cover most of the peanut butter cups. It will be a thin layer of dough on top and that is ok, do your best to spread it over the entire pan. If there are a few holes, that is ok.
- Bake the bars until golden brown, about 32 to 37 minutes. It is ok if some of the marshmallow puffs up outside of the bars. It will settle as it cools, plus it makes the bars look good! I love the marshmallow peaking through the bars.
- Cool the bars completely. Remove from the pan with the parchment paper. Cut the bars into squares and enjoy!
How to Store
- The peanut butter s’mores bars will keep covered on the counter for up to four days.
- You can also freeze these s’mores bars. Cool the bars completely and place in a freezer bag or wrap in plastic wrap and foil. Freeze the bars for up to 2 months. Defrost before serving.
- You can half this recipe and use an 8×8-inch pan, but I highly recommend making the full recipe because these bars are SO good!
Perfect Dessert to Share!
You are going to love these s’more bars because you don’t have to start a campfire, you don’t have to go camping, you can make them in your kitchen, anytime of year! The bars are soft, gooey, and LOADED with peanut butter flavor. When you cut into the bars and see a fat peanut butter cup and oozing marshmallow, you are going to jump for joy!
These s’mores bars are the perfect bars for sharing with family and friends. The bars travel well so you can take them to parties, or you can keep the entire pan to yourself. I won’t tell anyone if you don’t share. I completely understand:)
More S’mores Recipes:
- Ultimate S’mores Cookies
- S’mores Clusters
- Biscoff S’mores Cookies
- S’mores Rice Krispie Treats
- S’mores Skillet Cookie
- S’mores Puppy Chow
Peanut Butter S’mores Bars
Ingredients
- 2 cups all-purpose flour
- 2 cups graham cracker crumbs
- 1 teaspoon baking powder
- 1/2 teaspoon salt
- 1 cup unsalted butter, room temperature
- 1 1/2 cups packed light brown sugar
- 2 teaspoons pure vanilla extract
- 2 large eggs
- 7 ounce container of Marshmallow Creme PLUS ½ cup (you will need to buy two 7-ounce containers)
- 1/2 cup creamy peanut butter
- 24 peanut butter cups (I use Reese's snack size)
- Flaked sea salt, for sprinkling on bars
Instructions
- Preheat oven to 350 degrees Line a 9X13-inch pan with parchment paper, leaving a 2-inch overhang. Grease the parchment paper with nonstick cooking spray and set aside.
- In a medium bowl, whisk together the flour, graham cracker crumbs, baking powder and salt.
- In the bowl of a stand mixer, beat the butter and brown sugar until light and fluffy, about 2 minutes. Beat in the eggs and vanilla until well combined.
- Add the dry ingredients and mix on low until just combined.
- Divide the dough in half. Press half into the bottom of the prepared pan until the dough is evenly flattened.
- Dollop the marshmallow creme on top of the cookie dough base and spread into an even layer with a spatula.
- Place the peanut butter in a small microwave safe bowl and heat for 30 seconds. Stir the peanut butter and drizzle over the marshmallow topping. Place the peanut butter cups, in rows, over the marshmallow topping and peanut butter.
- Gently flatten and press the remaining dough over the top of the peanut butter cups, doing your best to cover most of the peanut butter cups.
- Bake the bars until golden brown, about 32 to 37 minutes. It is ok if some of the marshmallow puffs up outside of the bars. It will settle as it cools. Cool the bars completely. Remove from the pan with the parchment paper. Cut the bars into squares and enjoy!
Nutrition
Have you tried this recipe?
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Can you use mini marshmallows instead of the creme?
No, it won’t have the same gooey texture, marshmallows will melt differently.
These bars look insanely delicious! #sharingisntcaring
They are too good:)
I definitely need to make a batch of these! My kids would go absolutely crazy for them! Pinning, Stumbling, and Yumming!
Super easy to make and SO good! Loved them with vanilla ice cream. The pan disappeared way too fast!
when do you sprinkle on the sea salt, before baking or after? Thank you!
Do you think you could use Trader Joe’s mini Pb cups instead of big Pb cups?
Sure!