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S’mores Fudge Bars

posted by Liz Berg on June 25, 2026

These S’mores Fudge Bars are three layers of decadence: graham cracker crust, rich fudge, and a marshmallow meringue topping. They’re 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.

Table of Contents hide

1 Why You Must Make

2 Ingredient Notes:

3 Expert Tips:

4 Frequently Asked Questions

5 You May Also Like:

6 S'mores Fudge Bars

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 marshmallows you’d ever get out of a bag!
These are fun for summer gatherings when it’s too hot to light a fire and make old-fashioned s’mores.

S'mores Fudge Bars ingredients on a sheet pan with labels.

Ingredient Notes:

Graham Crackers (affiliate links in blue) – I buy a box of graham crackers and grind them in my food processor. You can buy ready-made crumbs if you prefer.
Milk Chocolate Chips – May use semisweet chocolate chips if desired.
Cream of Tartar– Stabilizes the meringue topping.
Egg Whites – PRO-Tip: Make sure the egg whites, bowl, and beaters are free from any grease, oil, or egg yolk, or the egg whites won’t whip properly when making the meringue topping.
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 trace of oil, and if even one speck of egg yolk, which contains fat, 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.
PRO-Tip: 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 using your food processor to grind them. 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?

S’mores 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 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.