Ooey Gooey S’mores Brownies (Best Ever Easy Recipe)

This post may contain affiliate links. Please read my disclosure policy.

S’mores Brownies combine two classic treats into one decadent dessert. Bake up a batch of marshmallow brownies today in under an hour! You’ll be obsessed with the gooey marshmallows and brownie layer! It’s time to take homemade brownies to a whole new level. 

titled image for ultimate smores brownies


Calling all brownie lovers! You’re about to meet your new favorite dessert.

The melty chocolate paired with the mini marshmallows proves why these easy s’mores brownies are the best.

Every bite is loaded with chocolate flavor, and the recipe card gives you all the simple steps and ingredients needed.

The next time that you’re craving chocolatey brownies,  add these homemade s’mores brownies to your list.

They’re like classic s’mores in brownie form – and I’ve been obsessed since the first time that I made them. These are the best thing to make – and literally is one of my favorite recipes. 

Whip these up as a labor of love for your family – and enjoy. Happy Baking, friends! 

overhead; bowl of melted chocolate next to marshmallows and graham crackers

S’mores Brownies

Indulge yourself in a delicious combination of extra fudgy brownies topped with crunchy graham cracker pieces and gooey, toasted marshmallows.

The combination of two popular chocolatey desserts in this smores brownies recipe will blow your taste buds away!

I love coming up with new ways to take brownies to the next level. Whether it’s for a holiday theme or to curb a chocolate craving, each one is better than the next.

Want something truly unique? Try Lemon Brownies or Baileys Boozy Brownies!!

smores dessert ingredients

Ingredient Notes and Substitutions

  • Eggs – Pull these out of the refrigerator when you preheat the oven so they have time to come to room temperature. 

    Doing so will help the smores brownies rise properly in the oven and give them a better overall texture.
  • Marshmallows – I find that the mini variety melts more evenly, but you can use regular-sized ones if that’s all you have on hand. 

    Measure out 4 cups total, then slice each one into quarters.
  • Chocolate – Hershey bars will create the classic flavor we all know and love, but you can use 2 cups of milk chocolate chips (divided) or 1 cup of milk chocolate chunks in this smores brownies recipe instead.
overhead: assembling a smores dessert

How To Make Marshmallow Brownies

Step 1: Whisk together the brownie batter and pour it into a 9×13 pan lined with parchment.

Step 2: Break the Hershey bars into 24 segments, then press them into the batter until they are submerged.

Step 3: Place the pan into the oven and bake until a toothpick inserted into the center comes out clean.

Step 4: Cover the brownies with a mixture of marshmallows, graham cracker pieces, and more chocolate. Place under the broiler until golden brown on top.

Step 5: Once cooled, slice s’mores brownies into 24 even pieces. Enjoy as is or serve with a scoop of vanilla ice cream!

Smores Brownies Recipe FAQ

I like thicker brownies. Can I make smores brownies in a 9×9 pan instead? 

Yes, but you will likely need to increase the cooking time by about 10 minutes to accommodate the thicker layer. Start checking your smores brownies at the 20-minute mark to be safe, and keep a close eye on them so they aren’t overdone. The marshmallow layer on top will be thicker as well, so be sure your pan is deep enough to accommodate both.

What’s the best way to cut marshmallow brownies? 

If you line the entire pan with parchment before adding the batter, you can lift the entire dessert out onto a cutting board. Spray a large knife with nonstick spray, then press down through the marshmallow brownies in straight lines to create evenly sized pieces. Or, run the knife under hot water and dry completely before slicing. The metal will retain the heat and glide through the layers like butter!

Do s’mores brownies need to be refrigerated? 

S’more brownies can be kept covered at room temperature for 2-3 days, longer if left uncut. Avoid the refrigerator since the cool air will cause the dessert to dry out and become hard.

overhead: sliced s'mores brownies

With love, from our simple kitchen to yours. 

Don’t miss a thing! Follow us on
Facebook | Twitter Pinterest | Instagram 

stacked s'mores brownies

2 smores brownies stacked

Ooey Gooey S’mores Brownies (Best Ever Easy Recipe)

Donna Elick
S'mores Brownies combine two classic treats into one decadent dessert. Bake up a batch of marshmallow brownies today in under an hour!
5 stars from 3 reviews
Tried this recipe?Please comment and review!
Prep Time 15 minutes
Cook Time 21 minutes
Total Time 36 minutes
Course Dessert
Cuisine American
Method Oven
Servings 24


  • 1 cup unsalted butter
  • 2 cups granulated sugar
  • 1 cup unsweetened cocoa powder
  • 1 tablespoon vanilla extract
  • 3 large eggs, room temperature
  • 1 cup all purpose flour
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon salt
  • 6.2 ounces Hershey chocolate bars, 4 1.55 ounce bars, divided and broken into pieces
  • 2 graham crackers sheets
  • 2 cups mini marshmallows


  • Preheat the oven to 350°F. Line a 9×13 baking dish with parchment paper, set aside.
  • Place butter in a large microwave-safe mixing bowl, melt completely. Add sugar, cocoa, vanilla, and eggs. Whisk to combine well. Add flour, baking powder, and salt. Whisk until completely combined, but do not over mix.
  • Pour into the prepared baking dish. Press 24 sectioned pieces from the Hershey bars into the brownie batter. Each bar has 12 sections, you can place them in a 4×6 pattern to make them even in the pan. Press them into the batter with a spatula until they are covered. Bake for 20 minutes or until a toothpick comes out clean.
  • In a medium mixing bowl, break the remaining chocolate bars and graham crackers into bite-size pieces, stir in the marshmallows.
  • Once the brownies are cooked through, pour the marshmallow mixture over the top of the brownies and spread it evenly.
  • Place the brownies under the broiler until the marshmallows are golden, about 30 to 60 seconds. Don’t walk away from the oven. While broiling your food can go from zero to burnt in seconds.
  • Allow the brownies to cool on a cooling rack for 5-10 minutes. Spray a knife with nonstick pan spray to help prevent the blade from sticking.


Serving: 1 | Calories: 232cal | Carbohydrates: 30g | Protein: 3g | Fat: 12g | Saturated Fat: 7g | Cholesterol: 44mg | Sodium: 81mg | Sugar: 21g | Fiber: 2g | Calcium: 23mg | Iron: 2mg

All nutritional information is based on third party calculations and is only an estimate. Each recipe’s nutritional value will vary depending on the ingredients used, measuring methods, and portion sizes.

Tried this recipe?Let us know how it was!
titled image for ultimate smores brownies

Originally published June 2021, updated and republished June 2024

Disclosure: Posts may contain affiliate links. If you purchase a product through an affiliate link your price will remain the same and The Slow Roasted Italian will automatically receive a small commission. Thank you for supporting us, it helps us keep creating new recipes.

The Simple Kitchen cookbook affiliate linked banner


  1. 5 stars
    I make brownies all the time but this is definitely my all-time favorite! Just the brownie recipe will become my new go-to for ALL my brownie creations but adding graham crackers marshmallows and Hershey bars on the top will remind you of when you were a kid and made s’mores. Excellent recipe!

    1. Hi Carol,
      Thanks so much! It is such an amazing brownie, we all love it here. Have a great day!
      TSRI Team Member,

  2. 5 stars
    This recipe was a breeze to make! The combination of flavors is absolutely divine. Definitely a keeper!

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating