S’Mores Cookie Bars

That classic combination of graham crackers, chocolate and marshmallow has been a favorite dessert for many, many years. Unfortunately, many of us (myself included!) can’t fathom the idea of having to go camping in order to take advantage of making s’mores around a campfire.

s'mores cookie bars on a white dessert plate

If you’re hungry for  s’mores, but don’t want to deal with the whole campfire thing, try making these s’mores cookie bars in your kitchen. They combine all the flavors of the chocolate, marshmallow and graham crackers into easy-to-eat bars that you can take to a potluck or just enjoy at home with a glass of milk.

ingredients needed to make s'mores cookie bars

To begin, you’ll want to gather together the following ingredients: graham crackers, white and brown sugars, butter, flour, baking soda, salt, egg, vanilla, chocolate chips, mini marshmallows, and Hershey’s chocolate bars.

You’ll want to pop the marshmallows into the freezer for a few minutes to get firm while you prep the crust and the cookie dough. This helps the marshmallows to retain their shape, rather than melt into the bars when baked.

cookie bar dough pressed into baking pan

For the crust, combine the graham cracker crumbs with melted butter and sugar, them press into an even layer in the pan. There’s no need to pre-bake the crust; just set it to the side while you work on the cookie dough.

cookie dough, marshmallows and chocolate chips in mixing bowl

Mix the two sugars with butter in a large mixing bowl; add the vanilla and egg, then the dry ingredients. Lastly, add in some chocolate chips and marshmallows. The dough will look a little clumpy.

unbaked cookie bars in baking dish

When mixed, spoon the cookie dough on top of the graham cracker crust, and press into an even layer. Sprinkle the remaining marshmallows on top and bake for about 15-20 minutes, until the center is set.

squares of Hershey's chocolate in a white bowl

While the cookie bars are baking, break up your Hershey’s bars into smaller pieces and place them into the freezer. When the cookie bars come out of the oven, let them cool for just a few minutes, then place the Hershey’s pieces on top of the bars. The residual heat of the cookie bars will melt the chocolate ever-so-slightly, allowing the Hershey’s name to hold its shape.

After the bars are completely cool, cut them into squares and enjoy!

S’Mores Cookie Bars

Course Dessert
Cuisine American
Keyword cookie bars, s'mores dessert
Author Erin Myers


For the Graham Cracker Crust:

  • ¼ cup granulated sugar
  • cup graham cracker crumbs
  • ½ cup butter melted

For the Cookie Bars:

  • 2 cups all-purpose flour
  • ½ teaspoon baking soda
  • ½ teaspoon salt
  • ¾ cup unsalted butter melted
  • 1 cup packed brown sugar
  • ½ cup granulated sugar
  • 1 tbsp. vanilla extract
  • 1 egg
  • cup semisweet chocolate chips
  • 1 1/2 cups mini marshmallows
  • 2 Regular size Hershey chocolate bars


  1. Preheat oven to 350 degrees F. Place marshmallows in freezer and allow to freeze (it won’t take long). Lightly grease a 9x13-baking dish with cooking spray.
  2. Start out with making the Graham Cracker Crust. Combine the crumbs, granulated sugar, and butter until combined. Press into the bottom of the prepared baking dish.
  3. In a medium bowl, cream together the melted butter (slightly cooled), brown sugar and granulated sugar until well blended. Beat in the vanilla, and egg, until creamy. Mix in the flour, baking soda, and salt. Stir in 1 cup of the marshmallows and the chocolate chips.
  4. Spoon dough on top of the graham cracker crust and lightly press into an even layer. Sprinkle remaining ½ cup of marshmallows on top, slightly pressing them into the cookie dough.
  5. Bake for 15-20 minutes or until top begins to get slightly golden brown. Make sure to bake until the center is set. Be sure not to over bake as they will continue to firm up when cooling.
  6. While bars are in the oven, break candy bar into sections and place in freezer.
  7. After bars are done baking, remove pan from oven and allow to cool for a couple of minutes then gently place broken candy bar pieces on top.
  8. Cool completely before cutting into squares and enjoy!

s'mores cookie bars on a white plate next to a Hershey bar

Don’t they look yummy? The melted marshmallows on the top of the bars really make this dessert! The kids also enjoy seeing the tiny little candy bars on top of their cookie bars too 🙂

I hope that you’ll enjoy making these delicious S’mores Cookie Bars, even if you do get a chance to do some camping this fall!

Which part of s’mores is your favorite…the graham cracker, the marshmallow, or the chocolate?

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