Best S’Mores Brownies From a Mix

These S’mores Brownies bring the campfire treat straight to your kitchen! With layers of fudgy brownie, gooey marshmallows, and crunchy Graham cracker pieces, they’re everything a s’mores lover could want in a single bite.

This fudgy brownies recipe starts with a boxed brownie mix, making it perfect for a quick dessert that feels homemade. These easy s’mores brownies are one of the easiest desserts you can make any time of year.

Why You’ll Love This Recipe

• Kid-Friendly: No need for a campfire—make these indoors, and they’re perfect for family baking time.
• Effortless Preparation: Just use a boxed brownie mix and a few s’mores-inspired ingredients for an easy yet indulgent treat.
• Perfectly Gooey: The marshmallow layer broils to a golden brown, adding a delightful gooey texture that pairs beautifully with the fudgy brownie base.
• Customizable for Fun: From adding more chocolate chips to incorporating Graham cracker crumbs, this recipe is flexible for different tastes.
• Beyond Tasty: Like my Starbucks Copycat Brownies, My Cake-style brownies and my Chocolate Cheesecake brownies, these are delicious and always a hit at events.

Ingredients for decadent s’mores brownies

• Mini marshmallows
• Brownie box mix
• Eggs
• Oil
• Water
• Graham cracker breakfast cereal
• Semi-sweet chocolate chips (or milk chocolate)

How to make homemade s’mores brownies

1. Cool completely before slicing
2. Bake brownies according to package directions
3. Add marshmallows and ⅓ cup chocolate chips in a single layer
4. Broil on the top rack in oven at 500° for 90 seconds until marshmallows turn light brown
5. Remove from oven
6. Melt ⅓ cup chocolate chips in a microwave-safe bowl or paper plate
7. Drizzle melted chocolate on brownies and top with Graham cracker cereal

Tips for the Best Results

• Cool Before Slicing: Let the brownies cool completely before slicing to get cleaner cuts and avoid smushing the gooey marshmallows and melted chocolate.
• Prep Your Pan: Line your baking pan with parchment paper or aluminum foil, and apply nonstick spray. This ensures easy removal and clean cuts.
• Keep Ingredients at Room Temperature: Bringing eggs and other brownie mix ingredients to room temperature helps everything combine more smoothly, resulting in a fudgy chocolate brownie texture.
• Broil Carefully: When broiling, keep a close eye on the marshmallows—they only need about 90 seconds on the top rack to reach that golden brown perfection. A kitchen torch could also work if you want precise control over the browning.

Substitutions and Variations

• Enhance with Cocoa Powder: If you’re making brownies from scratch, adding a bit of extra cocoa powder will intensify the chocolate taste.
• Add a Graham Cracker Base: For a more classic s’mores experience, add a layer of Graham crackers to the pan before adding the brownie batter.
• Swap Marshmallows for Marshmallow Fluff: For an even gooier experience, swirl some marshmallow fluff into the brownie batter or add a layer just before broiling.
• Chocolate Choices: Try using milk chocolate chips, dark chocolate chunks, or even chopped chocolate bars on top of the brownies for a richer chocolate flavor.

Frequently Asked Questions

I remember making my first s’mores at a campfire while in Girl Scouts. Those were fun and carefree days of crafting, singing, service and playing games outside until it got dark.

Do you love S’mores brownies and the tasty combination of marshmallows, chocolate and graham crackers?  Do you have a Pinterest board of just S’mores? I do.

Follow Raquel | Organized island’s board S’mores on Pinterest.

Looking for more easy and delicious S’mores desserts? Try my S’mores Rice Krispie Treats my S’mores Cookie Bars or my delicious S’mores Bark. They are all are super simple to make and full of sweet s’mores flavor!

More S’mores Dessert Recipes

• S’ mores cupcakes are a wonderful way to enjoy the flavors of smores for summer.
• S’mores Cookies – The flavors of smores in a fun cookie!
• S’ mores Marshmallow Pops – A fun summer treat that embraces the flavor of summer.
• S’mores Golden Graham Treats – These delicious treats are a fun twist with all the flavors of s’mores.
• S’mores Ice Cream –  An easy no-churn ice cream recipe with the flavors of marshmallow, chocolate and graham crackers.
• S’mores Mix – A tasty trail mix with all the flavors of s’mores.

If you are not yet subscribing to my newsletter, you can subscribe here. I share a few things that I don’t share here and I email you only once a week. I know how valuable your time is and respect that tremendously!