Name: Easy S'mores Bars with Marshmallows and Chocolate
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 16 bars
Cuisine: American
Ingredients: 2.5 cups graham cracker crumbs (about 18 full crackers crushed); 0.5 cup unsalted butter (melted); 3 tablespoons granulated sugar; 1 pinch salt; 1.5 cups semi-sweet chocolate chips; 3 cups mini marshmallows (divided); 1 can sweetened condensed milk (14 oz)

Jump to Recipe

Growing up, s'mores were a special occasion thing. You needed a fire, the right weather, and a lot of patience. These bars changed all of that for me, and now this recipe is one of the most requested things I make for potlucks, bake sales, and lazy Sunday afternoons.

You'll find this comes together with ingredients you probably already have, no fire required. We're talking golden graham cracker crust, melted chocolate, and toasted marshmallows all in one pan. Let's create something worth sharing.

Easy S'mores Bars with Marshmallows and Chocolate

All the campfire flavor you love, baked into a chewy, gooey bar you can make any time of year.

4.6 (61 reviews)

Prep15 min

Cook30 min

Total45 min

Serves16 bars

Ingredients

2.5 cups graham cracker crumbs , about 18 full crackers crushed
0.5 cup unsalted butter , melted
3 tablespoons granulated sugar
1 pinch salt
1.5 cups semi-sweet chocolate chips
3 cups mini marshmallows , divided
1 can sweetened condensed milk , 14 oz

Instructions

Preheat your oven to 350 degrees F. Line a 9x13 inch baking pan with parchment paper and lightly grease the sides.

Combine the graham cracker crumbs, melted butter, sugar, and salt in a bowl. Stir until everything looks like wet sand and holds together when you press it.

Press about two thirds of the crumb mixture firmly and evenly into the bottom of the prepared pan. Use the flat bottom of a measuring cup to really pack it down. This crust is your foundation, so take an extra minute here.

Scatter the chocolate chips evenly over the crust. Pour the sweetened condensed milk slowly and evenly over the chocolate chips, covering the whole surface.

Sprinkle 2 cups of the mini marshmallows over the condensed milk layer. Scatter the remaining graham cracker crumbs on top, then finish with the last cup of marshmallows.

Bake for 25 to 30 minutes, until the marshmallows on top are golden brown and the edges are set. Keep an eye on them in the last few minutes, every oven runs a little different.

Let the bars cool completely in the pan before cutting. This is the hardest part, but it makes a real difference for clean slices. Once cooled, lift the parchment out, set it on a cutting board, and cut into 16 bars.

Tips & Notes

Crush graham crackers in a zip-top bag with a rolling pin if you don't have a food processor. It works just as well and feels satisfying.
Line your pan with enough parchment that it hangs over the sides a bit. Those overhanging edges act as handles and make lifting the whole slab out so much easier.
If your marshmallows are browning too fast, loosely tent a piece of foil over the pan for the last few minutes of baking.
For cleaner cuts, run your knife under hot water and wipe it dry between each slice. The bars cut much neater when the knife is warm.
These bars taste even better the next day once everything has fully set and the flavors have had time to settle together.

Storage: Store bars in an airtight container at room temperature for up to 4 days. Layer them between sheets of parchment paper so they don't stick together. You can also refrigerate them for up to a week, though the crust softens slightly when chilled.

Nutrition per serving · estimated

310 Cal

13g Fat

46g Carbs

4g Protein

1g Fiber

30g Sugar

160mg Sodium

Easy S'mores Bars with Marshmallows and Chocolate step-by-step

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Why Sweetened Condensed Milk Makes These Work

A lot of s'mores bar recipes use just butter and chocolate, and they taste good. But sweetened condensed milk is the ingredient that takes this recipe somewhere special. It binds the chocolate into a rich, fudgy layer that stays soft even after the bars cool completely.

It also acts as the glue holding all three layers together. Without it, you'd get crumbs and chocolate and marshmallows that slide apart when you pick up a bar. With it, every bite stays intact and delivers that full s'mores experience in one clean piece.

Making These Bars Your Own

Once you've made this recipe once, you'll start seeing all kinds of possibilities. Swap the semi-sweet chips for milk chocolate if you want something sweeter, or try dark chocolate for a slightly more grown-up bar. A handful of peanut butter chips layered in with the chocolate is a combination our household keeps coming back to.

You can also press a few whole graham crackers into the top before baking for extra crunch and that classic s'mores look. This is the kind of recipe that welcomes your own spin, so treat it as a starting point and have fun with it.