Name: Ultimate S'mores Brownies
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Yield: 16
Cuisine: American
Ingredients: 1 cup graham cracker crumbs 125 g; 3 Tablespoons melted butter 45 g; 1/3 cup butter, melted 75 g; 3/4 cup brown sugar 150 g; 1/3 cup cocoa powder 40 g; 1/4 cup all-purpose flour 37 g; 1/2 teaspoon baking powder 2 g; 1/8 teaspoon salt 1 g; 1 egg; 1 teaspoon vanilla 5 ml; 1 small bag mini marshmallows 250 g; 1 cup semi-sweet chocolate chips 175 g; 4 graham crackers

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By Rebecca St.Clair

These easy s’mores brownies are soft, chewy, and impossibly indulgent. Everything you love about two iconic desserts all rolled into one! Bring summer camp vibes to your kitchen any time of year with these brownies!

Gooey marshmallows, melty chocolate, and crunchy graham crackers all stacked on top of a buttery graham cracker crust and the best rich fudgy brownies. So you can enjoy all that campfire at home.

An over head view of S'mores decorated brownies. They have been cut into bars.

These treats are quick and easy to make and are perfect to bring to potlucks, backyard barbecues, or an indulgent dessert to serve at home.

A white plate with dessert bars with marshmallow, chocolate and Graham cracker pieces. There are more brownie bars on a wooden cutting board to the side.

Why You’ll Love This Recipe

Quick and easy – Everything comes together in one pan and only requires a handful of ingredients to make!
Rich and decadent – Salty, sweet, and gooey indulgence in every bite.
Simple ingredients – Made with pantry staples.
Versatile – Add your favourite type of chocolate or cookie.

A white plate with brownies with smores themed toppings.

How to store S’mores brownies

This recipe makes 12 brownies, so you can snack on them all week long! To make sure they stay as fresh as the day you made them, store them properly.

Room temperature

Allow them to cool completely.
Cut into bars and store in an airtight container.
They will stay fresh at room temperature for up to 4 days.

Fridge

Allow to the brownies to cool completely.
Cut into bitesized bars and place in an airtight container.
Store in the fridge for up to 1 week.

Freezer

Allow the brownies to defrost the day before, in the fridge, before serving.

Allow the brownies to cool to room temperature.
Cut into individual bars.
Place leftover bars in an airtight container.
Store in the freezer for up to 3 months.

A white plate full of s'mores themed bars.

Substitutions for S’mores Brownies

Feel free to substitute some of the ingredients in this recipe to suit your taste.

A great option is the type of chocolate. Use anything from dark to white chocolate or cut up your favourite chocolate bars for a unique taste.

Another great way to customize this recipe is with the cookies. The graham cracker crust can be made with Oreo cookie crumbs. The Graham crackers on top can be replaced with your favourite cookie like Oreo Cookies, vanilla wafers, or even Teddy Grahams for a fun kid friendly treat.

A black plate with s'mores themed dessert bars.

Ingredients

Graham cracker crumbs – For the brownie base.
Butter – Melted butter holds together the base and adds richness to the brownies.
Brown sugar – For a soft caramel flavour.
Vanilla – Flavour.
Egg – Richness.
Cocoa – Rich chocolate flavour.
Flour – I used all-purpose flour for this recipe.
Baking powder – For lift and rise.
Salt – Flavour.
Milk – Creamy texture.
Chocolate chips – I used semi-sweet chocolate chips.
Mini marshmallows – Gooey S’mores topping.
Graham crackers – Broken whole Graham crackers for garnish.

How to make S’mores Brownies

Preheat the oven to 350 °F (180 °C).
Grease and line an 8 x 8 in. square pan with parchment paper.
In a bowl, mix 1 cup of Graham cracker crumbs with 3 Tbsp of melted butter.
Press this into the bottom of the lined pan.
Bake in the preheated oven for 10 minutes.
Meanwhile in a bowl, mix together 1/3 cup melted butter, 3/4 brown sugar.

A graham cracker base in a parchment lined square glass pan.

A sugar and butter mixture in a white sauce pot.

7. Stir in 1/4 cup flour, 1/3 cup cocoa, 1/2 tsp baking powder, 1/8 tsp salt.

8. Mix in 1/4 cup milk, 1 tsp vanilla, and 1 lightly beaten egg.

9. Pour this on top of the baked crust.

10. Bake for another 20 minutes.

Baked brownies with a graham cracker crust. They are in a parchment lined glass square pan.

11. Remove from the oven and immediately top with 1 small bag of mini marshmallows.

12. Return to the oven to allow the marshmallows to soften and puff up. About 5 minutes.

13. Remove from the oven. Immediately sprinkle on 1/2 cup chocolate chips and poke the pieces of 4 broken graham crackers through the marshmallow topping. This will hold them in place as they cool.

14. Allow the brownies to cool before slicing and serving. (To stop the marshmallows from sticking to the knife as you cut them, brush the blade lightly with oil.)