Homemade S’mores Brownies

These Homemade S’more Brownies have all the gooey marshmallows, graham crackers, and melted chocolate of an original s’more cooked over a fire, but you can make it in your oven! The fudgy brownie base is the perfect layer for this easy s'more dessert.

During the summer, one of my favorite things to make as a kid was s’mores.

While I like a good bonfire, I LOVE the fact that I can have this easy s’mores brownie dessert any time of the year.

These brownies start with our grandma’s famous Fudgy Brownies as the base, but then are layered with toasted marshmallows, graham crackers, and chocolate squares to make the perfect s’more dessert.

If you love S’mores, be sure to check out more of our favorite s’more desserts, such as our No Bake S’mores Bars, S’mores Dessert Pizza, S’mores Hershey Kiss Cookies, and our Disneyland S’mores Bake!


What are s’mores?

A s’more is basically a graham cracker sandwich – take a graham cracker, break it in two, put a toasted marshmallow and half of a chocolate bar in. between the graham crackers and there you have it!

“S’more” is short for “some more”. There are many opinions about who first came up with a “s’more”, but there is one early published recipe by The Campfire Marshmallow Company in 1920’s. It’s been around for a very long time!

Usually s’mores are cooked over a campfire (here’s a cool way to make them in the microwave!), but this recipe has you toast the marshmallows on top of your brownies right in your oven.

Related Article: 12 Amazing S’mores You Need To Make This Summer

Ingredients in Homemade S’mores Brownies

  1. Unsweetened cocoa powder
  2. Butter
  3. Granulated sugar
  4. Eggs
  5. Vanilla extract
  6. Flour
  7. Salt (I used unsalted)
  8. Miniature marshmallows
  9. Graham crackers
  10. Hershey’s candy bars

*Pro tip: If you don’t have Hershey’s candy bars available, you could substitute chocolate chips.

How to make Homemade S’mores Brownies

Turn the oven on to 325 degrees then get a 9 x 13 inch baking pan out and grease it with non-stick cooking spray.

In a small saucepan over medium heat, begin to melt the butter. After the butter has melted completely, stir in the cocoa powder until it is smooth.

Next, grab a medium-sized mixing bowl and add in the granulated sugar and eggs and stir them until they are combined.

With the sugar and eggs mixed together, add in the vanilla, flour and the salt. Cream all of the ingredients together until they are fully combined.

Now that the brownie batter is all mixed together, spoon the batter into the prepared 9 x 13 inch baking pan.

Then, place the pan in the oven for about 25 to 28 minutes or until the brownies are cooked all the way through.

One the brownies are cooked all the way, remove the pan from the oven. Top the brownies with miniature marshmallows, broken graham cracker pieces, and Hershey’s candy bar pieces evenly throughout the whole pan.

Place the pan back in the oven for 2-3 more minutes or until the marshmallows are starting to puff up and the Hershey’s candy bar pieces begin to melt.

Take the brownies out of the oven and let them cool completely. Cut them into squares and enjoy.


Can I used a brownie mix from a box for this recipe?

Definitely! Brownies from a box will work perfectly in this recipe. Just make sure that the brownie mix is for a 9×13″ pan.

Follow the directions on the box of brownies and bake as directed, then pick up on the step of the recipe where you add the marshmallows, graham crackers, and Hershey’s chocolate pieces on top.

If you want to make your brownie mix from a box taste better, check out these tips.

How to cleanly cut brownies

These brownies are GOOEY and can be really hard to cut! Here are my tips to getting a nice, clean cut.

  • Let the brownies cool completely before you try to cut them. Cutting warm, gooey marshmallows is only asking for a mess. If you don’t care how the brownies look, feel free to cut into them while they are still warm. But if you want a nicer, clean edge, resist the urge and let them cool down.
  • Use a plastic serrated knife. I know that it sounds crazy, but it works!
  • Spray your knife with non-stick cooking spray (or your choice of grease). Just spray both sides of the blade before making a cut. After each cut, wipe the knife clean and re-spray.
  • Dip the knife in hot water before making each cut. Clean off the knife after each cut and then dip it again in the hot water. It will help make every cut smooth as butter!

Other things to add to these S’more Brownies:

My kids love to mix it up and add all kinds of things to their brownies! Here are some of our favorite toppings that would be delicious on these S’more Brownies.

  • peanut butter chips
  • M & M’s
  • chopped nuts
  • crushed Oreo cookies
  • Reese’s peanut butter cups
  • drizzled caramel
  • Rolo’s
  • sliced strawberries or raspberries
  • drizzled Nutella

Watch us make the easiest s’mores dessert!

If you have read our recipes and wondered what it’s like in our kitchen while we make our tried and true recipes, check out our YouTube channel!

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Want more brownie recipes?

Serves: 24

Homemade S’mores Brownies

These Homemade S’more Brownies have all the gooey marshmallows, graham crackers, and melted chocolate of an original s’more cooked over a fire, but you can make it in your oven! The fudgy brownie base is the perfect layer for this easy s'more dessert.

10 minPrep Time

30 minCook Time

40 minTotal Time

Save RecipeSave Recipe


  • 1 cup butter (my grandma originally made this recipe with 1 cup margarine - either works)
  • 8 Tablespoons cocoa powder
  • 2 cups sugar
  • 4 eggs
  • 1 teaspoon vanilla
  • 2 1/2 cups flour
  • pinch salt
  • 2 cups mini marshmallows
  • 4 graham cracker sheets (broken into small pieces)
  • 3 (1.55 ounce) Hershey’s chocolate candy bars (broken into pieces)


  1. Preheat oven to 325 degrees.
  2. Grease a 9 x 13 inch baking pan.
  3. In a small saucepan over medium heat, melt butter. Once butter is melted, stir in cocoa until smooth. Pour into a mixing bowl.
  4. Then add in sugar and eggs to the mixing bowl and stir together.
  5. Add in vanilla, flour, and salt and beat together well.
  6. Spoon batter into prepared pan.
  7. Bake 25 to 28 minutes, or until cooked through.
  8. Remove pan from oven and top with marshmallows, graham crackers, and candy bar pieces. Place pan back in oven and cook for 2-3 more minutes or until marshmallows start to puff up and chocolate pieces start to melt.
  9. Allow brownies to cool completely, then cut into squares and serve.
  10. Makes 24 brownies.



4969 cal


193 g


765 g


63 g
Click Here For Full Nutrition, Exchanges, and My Plate Info

Adapted from our Grandma’s Fudgy Brownies and Pip and Ebby


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