These S’mores Fudge Bars are 3 layers of decadence: graham cracker crust, rich fudge and a marshmallow meringue topping. Even more delicious than the classic campfire treat!

When it comes to s’mores, I can take ’em or leave ’em. But s’mores desserts like this S’mores Bars Recipe are a whole different story!

A S'mores Fudge Bar on a small white square ceramic plate.

Why You Must Make

  • They have the 3 components of the classic campfire treat: Graham Crackers, Chocolate, and Marshmallow!
  • The fluffy marshmallow meringue topping is homemade and SO much better than any marshmallow you’d ever get out of a bag!
  • These are fun for summer gatherings when it’s too hot to light a fire to make old-fashioned s’mores.
S'mores Fudge Bars ingredients on a sheet pan with labels.

Ingredient Notes:

  • Graham Cracker Crumbs – Buy by the box or grind your own in a food processor using graham crackers.
  • Milk Chocolate Chips – May use semisweet chocolate chips if desired.
  • Cream of Tarter – Stabilizes the meringue topping.
  • Egg Whites – Make sure whites, bowl, and beaters are free from any grease, oil, or egg yolk or the egg whites won’t whip correctly.
  • Corn Syrup – I use Karo brand. Spray your measuring cup with Pam to help it slide out easily.
3 S'mores bars on a white ceramic tray with 2 forks

Expert Tips:

  • The marshmallow topping is made with egg whites. PRO-Tip: When you whip egg whites, your utensils must be scrupulously clean or the meringue will not get white and fluffy. Make sure your bowl and beaters do not have any traces of oils and if even one speck of egg yolk contaminates the whites, they will not whip properly.
  • PRO-Tip: Use a hot dry knife to cut these bars. The topping is sticky and the heat will help the knife “melt” its way through.
  • Reheat your knife once it starts sticking again. I run it under my hot water dispenser, then wipe it dry with a towel.
  • You can purchase graham cracker crumbs, but you can also make them at home by breaking up graham cracker squares and running them through the food processor. The latter is more economical, too!
2 s'mores fudge bars on a square white plate with 2 red handled forks

Frequently Asked Questions

What are S’mores?

Smore’s are a campfire treat that was first introduced to the country by way of a Girl Scout cookbook in 1927. The name is a contraction of ” some more,” since after eating one of these, you’ll want some more.
S’mores are a sandwich made with 2 graham crackers, a fire-toasted, gooey marshmallow, and a square of milk chocolate candy bar. Often the marshmallows were roasted on a stick found while camping.

How Do You Make S’mores Bars?

There are numerous variations of s’mores bars, usually made with a graham cracker crust, chocolate filling, and marshmallow topping. The topping can be made with store-bought marshmallows or a homemade marshmallow topping. After adding the marshmallow layer, the bars can be carefully broiled, cooked in a hot oven, or browned with a mini kitchen torch.

How Do You Make S’mores Bars?

There are numerous variations of s’mores bars, usually made with a graham cracker crust, chocolate filling, and marshmallow topping. The topping can be made with store-bought marshmallows or a homemade marshmallow topping. After adding the marshmallow layer, the bars can be carefully broiled, cooked in a hot oven, or browned with a mini kitchen torch.

How Do You Store S’mores Bars?

This s’mores bars recipe has a gooey topping so it’s best to keep them in a single layer, in a covered container in the refrigerator for 3-4 days. Keep s’mores bars made with bagged marshmallows covered at room temperature or in the refrigerator.
Those made with packaged marshmallows can usually be frozen if kept airtight. They should keep well in the freezer for 2-3 months. Defrost overnight in the refrigerator before serving.

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A s'mores bar on a white plate with a piece on a red handle fork.

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One S'mores Fudg Bar on a square white plate.

S'mores Fudge Bars

Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes
Yield 16 bars

Layered s'mores bars with a graham cracker crust, fudge center and marshmallow topping.

Ingredients

Crust

  • 2 cups graham cracker crumbs
  • 10 tablespoons butter, melted
  • ¼ cup sugar
  • ½ teaspoon salt

Fudge layer

  • 2 cups milk chocolate chips
  • 14 ounce can of sweetened condensed milk

Marshmallow Layer

  • ¾ cup sugar
  • ½ cup light corn syrup
  • ¼ cup water
  • ¼ teaspoon salt
  • 2 egg whites
  • ¼ teaspoon cream of tartar
  • 1½ teaspoons vanilla

Instructions

  1. Preheat oven to 350°
  2. Line a 9 x 9-inch baking pan with nonstick foil. Set aside
  3. Mix all crust ingredients and press into the bottom of the pan.
  4. Bake for 10 minutes and let cool.
  5. For the fudge filling, microwave the condensed milk and the chocolate chips together until melted and smooth. Pour onto the crust and spread with offset spatula. Place in refrigerator to chill.
  6. In a mixer, beat 2 egg whites and cream of tartar together until soft peaks form. Let that rest while you make the sugar syrup.
  7. In a pot, combine sugar, corn syrup, water and salt over medium-high heat.
  8. Boil together until a candy thermometer reaches 240°. This mixture is very HOT. Be careful.
  9. Slowly and carefully drizzle this into the egg whites with the mixer on low speed.
  10. Once added, put mixer on medium-high and beat 8 minutes. Add vanilla the last few seconds.
  11. Spread this all on top of the chocolate layer carefully. Swirl or make peaks if desired.
  12. Put pan under broiler for 1 minute or until the top of the marshmallow layer gets lightly golden. Watch carefully.
  13. Cool, chill, then cut into bars to serve.

Notes

Adapted from Cookies & Cups via Hugs & Cookies

Make sure no oil or egg yolk contaminates your egg whites or they will not whip properly.

Be careful when adding the sugar syrup to the egg whites as it is extremely hot.

Watch your pan carefully when it's under the broiler so your topping does not burn.

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Nutrition Information:

Yield:

16

Serving Size:

1 bar

Amount Per Serving: Calories: 410Total Fat: 17gSaturated Fat: 10gTrans Fat: 0gUnsaturated Fat: 6gCholesterol: 35mgSodium: 277mgCarbohydrates: 60gFiber: 1gSugar: 52gProtein: 5g

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