S’mores Brownies

These s’mores brownies are everything you love about a gooey campfire s’more, baked into a fudgy chocolate brownie! Made with a buttery graham cracker crust topped with brownie batter, finished with melty chocolate and toasty marshmallows.

Obsessed with s’mores? Try my peanut butter s’mores brownies for the ultimate peanut butter lover’s version. And don’t miss this fudgy s’mores pie, too!

Why You’ll Love These S’mores Brownies

Make the best s’mores brownies with melty chocolate and toasty marshmallows layered over your favorite boxed brownie mix! These brownies are:

  • (Almost) homemade. I make this recipe with a box of brownie mix to save time, but you can use homemade brownies, or any brownie recipe your heart desires. Go ahead and get creative with your brownie layer.
  • Easy to assemble. It’s as easy as layering chocolate bars and marshmallows over a pan full of baked brownies in a crunchy graham cracker crust.
  • Totally indulgent. I mean, this dessert mash-up is all the best things about a s’more baked into a BROWNIE! Melted chocolate, ooey marshmallows, buttery graham crackers, and a thick brownie layer. It doesn’t get much better.
Ingredients for smores brownies with text labels overlaying each ingredient.

Ingredients You’ll Need

You only need 4 ingredients to make these decadent smores brownies, in addition to any ingredients called for on your box of brownie mix. Scroll to the recipe card for a printable ingredients list.

  • Graham Crackers – You’ll make an easy graham cracker crust with crushed graham crackers, sugar, and melted butter.
  • Brownie Mix – The brownie layer is quick to make with a boxed brownie mix. Choose your favorite mix from the baking aisle, plus any extra ingredients listed on the box.
  • Chocolate Bars – Keep it classic with Hershey’s chocolate bars, or you can use another chocolate bar of your choice.
  • Marshmallows – I recommend mini marshmallows for topping your “s’mores”. You can also use marshmallow fluff.

How to Make S’mores Brownies

If you’re craving s’mores and find yourself without a campfire, it’s time to get a batch of these s’mores brownies in your oven! It’s quick and easy to do. Remember to scroll down to the recipe card for printable instructions.

  • Make the crust. Mix graham cracker crumbs with melted butter and sugar, and press the crust into the bottom of a lined 9×9 baking pan. I like to set aside some of the graham cracker crumbs to sprinkle over the finished brownies as a garnish.
  • Par-bake the crust. Bake the crust on its own in a 350ºF oven for 8-10 minutes.
  • Prepare the brownies. Meanwhile, prepare your brownie batter according to the directions on your chosen box of brownie mix. When the crust is ready, pour the batter into the pan and spread it evenly over the crust.
  • Bake. Bake the brownies following the directions on the package, adjusting the oven temperature accordingly.
  • Add toppings. As soon as the brownies are out of the oven, break apart some Hershey’s chocolate bars and layer the pieces over the brownies. Sprinkle over mini marshmallows, and return the brownies to the oven. Bake for 3-4 minutes until the marshmallows are looking puffed and toasted.
  • Finish and cool. Top the finished brownies with graham cracker crumbs and extra chocolate pieces. Afterward, let the brownies cool to room temperature in the pan before slicing.
Close up overhead view of a stack of smores brownies.

Tips for Success

These homemade s’mores brownies are about to become a new favorite dessert (just ask my kids, they are obsessed). To make sure that your brownies turn out perfect every time, follow these tips:

  • Line the pan. Make sure to line the baking pan with parchment paper for easy removal.
  • Layer the chocolate before the marshmallows. The melted chocolate helps the marshmallows adhere to the brownie layer below.
  • Use larger marshmallows. If you don’t have mini marshmallows but have jumbo-sized in your pantry, chop up the larger marshmallows into smaller pieces to use instead.
  • Get clean cuts. When cutting your smores brownies, spray the knife lightly with cooking oil and wipe it clean between cuts. Melted marshmallows are extra gooey, so this helps a lot with sticking.
  • Go all out when serving. Serve these brownies with a scoop of ice cream and a drizzle of microwave caramel sauce.
Assorted smores brownies stacked on a parchment-lined board.

Variation Ideas

Try these fun ideas to make this brownie recipe your own:

  • Different brownies. Use any brownie recipe you’d like for your brownie layer, even homemade. Nutella brownies or Oreo brownies would be DELISH. Or, try these Bailey’s brownies for a fun, grown-up twist!
  • Different crust. Graham crackers are a traditional choice for s’mores recipes, but you can make the crust with Oreo crumbs, or another crushed cookie, like Biscoff cookies, wafers, or gingersnaps.
  • Add-ins. Stir chopped nuts or chocolate chips into the batter, or sprinkle them over top with the chocolate and marshmallows. 
Three smores brownies stacked on a board lined with parchment paper, with more brownies in the background.

How to Store

  • To Store. Store leftover smores brownies in an airtight container at room temperature. These brownies are at their freshest in the first 1-2 days.
  • Freeze. If you’re planning to freeze your brownies, I recommend freezing them after baking and before adding the chocolate and marshmallow layers. Store the cooled brownies airtight and freeze them for up to 2 months. Defrost them in the fridge, add the toppings, and bake as directed.

More Easy Brownie Recipes

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Close up overhead view of a stack of smores brownies.

S’mores Brownies

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  • Author: Shelly
  • Prep Time: 20 minutes
  • Cook Time: according to package instructions
  • Total Time: 0 hours
  • Yield: 16 servings 1x
  • Category: Brownies
  • Method: Oven
  • Cuisine: American


Smores brownies are everything you love about an ooey-gooey campfire s’more baked into a fudgy brownie! These smores brownies are quick to make using a box of brownie mix.


  • 1 ¾ Cup graham cracker crumbs, divided
  • 6 Tablespoons butter, melted
  • ¼ Cup sugar
  • 1 box brownie mix (plus ingredients to prepare according to package)
  • 6 Hershey chocolate bars
  • 2 Cups mini marshmallows


  1. Preheat the oven to 350 degrees. Line a 9×9 baking pan with parchment paper.
  2. Combine 1 ½ cups graham cracker crumbs, melted butter, and sugar. Mix well until it resembles wet sand. Spread the crumb mixture in the bottom of the baking dish and press into an even layer.
  3. Bake the graham cracker crust for 8-10 minutes in the preheated oven or until golden brown.
  4. While the crust bakes, prepare the brownie mix according to the package instructions.
  5. Remove the crust from the oven and spread the brownie batter evenly over the crust. Be careful when spreading so you don’t disturb the hot crust.
  6. Bake the brownies according to the package instructions.
  7. Remove the brownies from the oven and immediately top with 4-5 bars of Hershey chocolates broken into pieces. Sprinkle the mini marshmallows over the chocolate. Return the brownies to the oven for 3-4 minutes until the marshmallows puff and begin to brown.
  8. Remove the brownies and sprinkle with the remaining graham cracker crumbs and Hershey chocolate pieces.
  9. Cool completely in the pan before slicing.

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16 comments on “S’mores Brownies”

  1. I just made these last night for my bible study group. They LOOOVED them. said it was the best thing they've ever tasted! 🙂 a year later and this recipe is still going strong!

  2. This is my dream desert – it has everything that is good in this world in it. I know what I'm making this weekend. Thanks for sharing the recipe

  3. These look in-freaking-credible. I haven't had a smore in years; I think I need to go make one, or better yet – these!

  4. I've made a few varieties of these and while good have not been overly impressed. That said yours looks very pretty and yummier than mine. I'm going to keep it in mind for my next foray into s'mores brownies!

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