S’mores Cookie Bars | The Domestic Rebel

small stack of s'mores cookie bars on wire rack with mini marshmallows and chocolate

These S’mores Cookie Bars are irresistible soft and chewy cookie bars filled with gooey marshmallows, melty puddles of chocolate and buttery graham cracker crumbs in every bite! You’re going to love these easy bars!

We’re halfway through summer and I figured it was high time for another s’mores recipe. You guys are going to flip for these ultra tasty cookie bars, trust me!

In the summer, a few things happen to me. One is I get increasingly bitchier just because it gets to be a thousand degrees out and I can barely function. Two is I get very impatient (see number one) because I can’t think straight. I’m telling you, I instantly go into bitchy complaining mode from June-August because I just cannot handle these insane temps. It was 106 yesterday and I felt like my head was going to evaporate.

closeup of a s'mores cookie bar on a black wire rackThree is I get lazy. Even though my apartment’s pool glistens and sparkles as I walk by, I have no energy to get a suit on, slather up with sunscreen and trek down to the pool. And don’t even think about cooking! I pretty much exclusively eat smoothie bowls nowadays because the idea of turning on the oven or assembling some extensive dish is too much to bear!

Although these S’mores Cookie Bars do require an oven, they are super simple to make and they make a big ol’ pan of delicious s’mores goodness. No need for a campfire because let’s face it – I’m already living inside of what feels like a giant furnace. These bars require minimal prep but yields maximum flavor and they taste just like summer with gooey marshmallows, melty swirls of milk chocolate, and buttery graham crackers. Super yummy!

stack of s'mores cookie bars with marshmallows and hershey bars on wire rack

Now who is ready to enjoy these amazing S’mores Cookie Bars!?

author holding a s'mores cookie bar

S’mores Cookie Bars

These S’mores Cookie Bars are insanely delicious and taste just like summer! Soft and chewy bars stuffed with gooey marshmallows, melty pools of milk chocolate and buttery graham cracker crumbs!

Prep Time10 mins

Cook Time30 mins

Total Time40 mins

Course: Bars, Dessert

Cuisine: American, Dessert

Servings: 15


  • 12 Tablespoons (1 & 1/2 sticks) unsalted butter softened to room temperature
  • 1 cup brown sugar
  • 1/2 cup granulated white sugar
  • 1 large egg
  • 1 large egg yolk
  • 1 Tablespoon vanilla extract
  • 1 tsp baking soda
  • 2 tsp cornstarch
  • 1/4 tsp salt
  • cups all-purpose flour
  • 1/2 cup graham cracker crumbs
  • 2 cups miniature marshmallows divided
  • 1 cup milk chocolate chips
  • 4 fun size Hershey bars broken up


  • Preheat oven to 350° degrees F. Line a 13×9 light metal baking pan with foil, extending the sides of the foil over the edges of the pan. Spray the foil liberally with cooking spray. I recommend using foil or parchment due to the melted marshmallows making a mess!

  • In the bowl of a stand mixer, cream together the butter and both sugars with the paddle attachment until light and fluffy, about 1 minute. Add in the egg, beating well, followed by the egg yolk and vanilla, beating well after each addition. Lastly, add in the baking soda, cornstarch, salt, flour, and graham cracker crumbs and mix until incorporated. Stir in 1 & 1/2 cups of the marshmallows and all of the chocolate chips until combined.

  • Press the dough evenly into the prepared pan. Scatter the little Hershey bar pieces over the surface of the bars. Bake for 20 minutes, then remove from the oven but keep oven on. Sprinkle the bars with the remaining 1/2 cup miniature marshmallows and return to the oven to bake for another 5-10 minutes or until bars are light golden brown, appear set, and marshmallows are slightly toasted. Cool the bars completely before cutting into squares.


For this recipe, I recommend using Guittard or Ghirardelli milk chocolate chips.

close up of s'mores cookie bar on a wire rack with marshmallowYou guys are going to LOVE these irresistible s’mores bars!

S'mores Cookie Bars photo collage with text

Have a super sweet day!

xo, Hayley

Print Friendly, PDF & Email

Original Source Link

Never Miss A Recipe

Subscribe to our mailing list and get the freshest recipes!