S’mores Brownies (with peanut butter sauce)

These gooey brownies with a sweet peanut butter and marshmallow topping are a delicious treat to have on hand. These brownies have been a favorite recipe in my home, and adding the S’mores toppings makes them extra fun! The creamy, sweet and slightly salty peanut butter sauce takes these brownies to the next level, but is an optional step if you prefer to keep the brownies plain with the S’mores toppings or have a peanut allergy. For additional S’mores treats, you may enjoy S’mores mini cheesecakes or S’mores cookies!

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S'mores brownies with peanut butter sauce

S’mores cakey brownies

marilynpeight
Rich and gooey brownies are topped with chocolate, marshmallows and a delicious peanut butter sauce, making an elevated brownie that is perfect for any occasion!
5 from 1 vote
Prep Time 10 minutes
Cook Time 25 minutes
Course Dessert
Cuisine American
Servings 12

Equipment

  • baking dish (linked below)
  • Mixing bowl (linked below)
  • Saucepan (linked below)
  • measuring cups (linked below)
  • Whisk (linked below)

Ingredients
  

Brownies:

  • 1 1/4 cups all purpose flour
  • 1/2 cup cocoa powder
  • 1 teaspoon salt
  • 1 1/2 cups granulated sugar
  • 4 large eggs *see note for cakey brownies
  • 1 cup butter melted
  • 1 teaspoon vanilla extract
  • 1 cup chocolate chips melted *see note

Toppings:

  • 4 cups mini marshmallows
  • 3 oz. Hershey chocolate bars, broken into squares
  • 3 regular sized graham crackers, crumbled optional

Peanut butter sauce (optional):

  • 2 tablespoons butter
  • 7 regular sized Jet puffed marshmallows
  • 1/2 cup creamy peanut butter
  • 1/2 cup water
  • 2 tablespoons light corn syrup

Instructions
 

Preheat oven to 350.

  • Mix the first four ingredients in a medium sized bowl. Whisk in the eggs, melted butter, vanilla extract and melted chocolate chips, until the brownie batter is smooth and lump free.
  • Bake for 20-25 min. until puffed up slightly in the center and a toothpick inserted in the center comes out clean. Be careful not to overbake these brownies (they are better slightly under baked).
  • Sprinkle marshmallows and chocolate bits over the cakey brownies, then return to the oven and broil at 400 degrees for around 30 seconds, until marshmallows have puffed up slightly and are browned on the top. Watch the marshmallows carefully as they can brown very quickly. Optional: Sprinkle crumbled graham cracker bits over the melted marshmallows and chocolate.

Peanut butter sauce:

  • Take a small saucepan and melt the butter over med-low heat. Add marshmallows and allow to melt slightly, stirring constantly. Stir in peanut butter and keep stirring until marshmallows have melted completely. Stir in water and corn syrup, then bring to a light boil, stirring rapidly for a minute or two until well combined. Remove from heat, then allow the peanut butter sauce to cool and thicken before drizzling over the cooled brownies.

Notes

Melted chocolate chips makes these brownies nice and gooey. If you prefer a brownie that is more cake-like in texture, you can toss the chocolate chips into the batter without melting them first. 
If you prefer to have cakier brownies, you can add an additional egg and another 1/4-1/2 cup of flour to the brownie batter. 
Additional notes and step by step photos below. 
Keyword S’mores, Brownies, gooey, peanut butter sauce, marshmallow topped brownies
Tried this recipe?Let us know how it was!

Equipment needed for these S’mores brownies:

  • Baking dish I like to use a glass baking dish for baking cakes, brownies etc. Using a glass baking dish makes checking the cakes and brownies on the bottom a lot easier.
  • Mixing bowl I prefer to use stainless steel mixing bowls, because they have always been sturdy and reliable for me.
  • Measuring cups I also prefer stainless steel measuring cups for the same reasons given above.
  • Sauce pan A small saucepan will be needed for making the peanut butter sauce in.
  • Whisk A whisk is also needed for whisking and mixing the ingredients together, unless you prefer to use a hand mixer, which also works for mixing this cakey brownie batter.

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Ingredients needed for these S’mores brownies: sugar, butter, eggs, flour, salt, vanilla extract, cocoa powder and chocolate chips. Toppings: mini marshmallows, Hershey’s chocolate bars and graham crackers (optional). Peanut butter sauce: light corn syrup, regular sized marshmallows and water (not shown).

The original recipe for these brownies came from a friend of mine who made these for our teams serving as humanitarian aid workers in Iraq in the aftermath of ISIS. After cleaning out dirty, burnt and ransacked concrete houses, she would often have these fresh brownies waiting for us, giving us a taste of home after a long, hard day of work.

Step 1: Mix the first four ingredients in a medium sized bowl. Whisk in the eggs, melted butter, vanilla extract and melted chocolate chips, until the brownie batter is smooth and lump free.

Tips for combining melted butter and eggs:

Be sure to allow your melted butter a few minutes to cool before adding to the brownie batter. Add room temperature and not cold eggs to the brownie batter to avoid the butter seizing up from being exposed to cold temperatures. If you wish to warm up eggs from the refrigerator, you can place them in a dish and cover them with warm water for ten minutes before adding them to the brownie batter.

Step 2-3: Bake for 20-25 min. until puffed up slightly in the center and a toothpick inserted in the center comes out clean. Be careful not to overbake these brownies (they are better slightly under baked). Sprinkle marshmallows and chocolate bits over the cakey brownies, then return to the oven and broil at 400 degrees for around 30 seconds, until marshmallows have puffed up slightly and are browned on the top. Watch the marshmallows carefully as they can brown very quickly. Optional: Sprinkle crumbled graham cracker bits over the melted marshmallow and chocolate

For the peanut butter sauce: Take a small saucepan and melt the butter over med-low heat. Add marshmallows and allow to melt slightly, stirring constantly. Stir in peanut butter and keep stirring until marshmallows have melted completely. Stir in water and corn syrup, then bring to a light boil, stirring rapidly for a minute or two until well combined. Remove from heat, then allow the peanut butter sauce to cool and thicken before drizzling over the cooled brownies.

Tip for melting the peanut butter and marshmallows:

Be sure to stir the peanut butter sauce constantly while melting the marshmallows and peanut butter together, to prevent the mixture from burning. If you wish to make the sauce sweeter, additional corn syrup can be added.

Last step: Drizzle peanut butter sauce over the melted chocolate and marshmallows, then serve and enjoy! These brownies keep at room temperature for several days. These S’mores brownies can also be frozen for several months for longer storage.

Feel free to pin for later and tag me on Instagram with a photo of your own creation!

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