Name: Starbucks Copycat S'mores Bars
Prep time: 20 min
Cook time: 20 min
Total time: 1 h 10 min
Yield: 16
Cuisine: American
Ingredients: 1-1/4 cups graham cracker crumbs; 5 Tablespoons butter, melted; 1/4 cup granulated sugar; 4 full-size Hershey bars (1.55 ounces each--6.2 ounces total); 2.5 ounces sweetened condensed milk; 3 cups mini marshmallows (approximately 1/2 bag or 5 ounces of marshmallows)

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S'mores Bars are the ultimate melted chocolate marshmallowy treat wrapped in a homemade graham cracker crust.

I recently simplified this recipe and, frankly, it's better. I wanted a s'mores bar made with basic ingredients you might already have in the pantry but that still reminded me of the amazing s'mores bars Starbucks sold years ago.

A close-up of gooey smores bars with graham crust, melted chocolate, and toasted marshmallows on a ceramic plate. — S’mores bars: all the ooey-gooey magic of a campfire treat, made right in your oven.

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Before You Start
Starbucks copycat Smores bars Ingredients
S'mores bars step by step
Recipe Tips
How to Cut S'mores bars cleanly
Storage and Make Ahead Instructions
Pin to Save for Later
Recipe
Comments

Before You Start

Start by making a quick graham cracker crust: just crumbs, sugar, and melted butter. Bake it for a few minutes to give it structure. Full instructions for making a homemade 8x8 graham cracker crust.

Then comes the fun part: layer on milk chocolate bars, drizzle with sweetened condensed milk and finish with a cloud of mini marshmallows.

Put it back in the oven until the marshmallows are puffed and golden. Then you'll chill it thoroughly to make it easier to slice.

Smores bars with toasted marshmallows, melty chocolate, and a graham cracker crust rest on parchment paper.

Starbucks copycat Smores bars Ingredients

Tray with marshmallows, chocolate bar, melted butter, sugar, graham cracker crumbs, and condensed milk—everything you need to make delicious smores bars. — S'mores bars ingredients

Graham cracker crumbs
Granulated sugar
Melted butter
Chocolate bars
Sweetened condensed milk
Miniature marshmallows

See recipe card for ingredient amounts.

S'mores bars step by step

A spatula mixes crushed graham crackers in a glass bowl on a dark countertop, preparing the base for delicious smores bars. — Combine graham cracker crumbs, sugar and melted butter in a mixing bowl.

A blue spatula spreads crumb crust for smores bars in a parchment-lined square baking pan with binder clips. — Press crumb mixture firmly into a parchment-lined 8x8 pan.

A square baking pan lined with parchment paper holds a golden brown crumbly crust, perfect for delicious smores bars. — Make an 8x8 graham cracker crust. Bake at 350°F for 7 to 10 minutes.

A baking pan with a graham cracker crust topped with Hershey’s chocolate bars on parchment paper, perfect for making classic smores bars. — Lay four chocolate bars across the top of the graham cracker crust.

Smores bars made with chocolate bars on a graham cracker crust, drizzled with white sauce and baked in a parchment-lined square pan. — Drizzle sweetened condensed milk over the top of the chocolate bars.

Pan lined with parchment, filled with graham crust, Hershey’s chocolate bars, and drizzled sweetened condensed milk—these irresistible s’mores bars capture classic campfire flavor in every bite. — The condensed milk will settle into the chocolate bars.

A hand adds mini marshmallows to a pan of smores bars topped with melted chocolate and white drizzle. — Spread miniature marshmallows over the top before putting the pan back in the oven.

A hand adds mini marshmallows to smores bars in a parchment-lined baking pan, creating a chocolate dessert. — Spread in an even layer. I used three cups of marshmallows but if you want to use more or less, your choice.

A baked square pan of smores bars topped with toasted marshmallows sits on parchment paper, held in place with binder clips. — S’mores bars: all the ooey-gooey magic of a campfire treat, made right in your oven.

Recipe Tips

If you want these bars to hold together better, you should bake the graham cracker crust for 7 to 10 minutes.
Don't skip the sweetened condensed milk drizzle. It helps to hold the graham cracker, chocolate and marshmallows together.
You can buy squeeze bottles of condensed milk now so you don't have to store partially used cans in your fridge.

How to Cut S'mores bars cleanly

I love making bar cookies because they're so easy.

However, I struggle with cutting them neatly.

Use a sharp knife, a bench scraper and/ or a ruler.

Use the bench scraper to score a grid on top of the bars for slicing.

Run the knife under hot tap water and wipe with a clean cloth to dry the knife. Immediately slice the bar using the ruler or scraper as a guide to follow. Repeat the hot water rinse after every two slices.

I wanted to make these bars on the smaller side because they're so rich so I sliced four rows horizontally and then four rows vertically so that I had 16 2-inch bars.

Storage and Make Ahead Instructions

Store these bars at room temperature in an airtight container for up to a week. I bought this sturdy freezer container for desserts in 2025 and really like it. It has clips so you know when it's sealed.

For longer storage, wrap individual bars in plastic wrap or wax paper, place in a freezer safe container and freeze for up to one month.

Most desserts like s'more bars freeze really well. See more dessert freezing tips.

Pin to Save for Later

Smores bars topped with toasted marshmallows on a baking sheet, with text: Copycat Starbucks Smores Bars. — Craving s’mores without the campfire? These easy s’mores bars are loaded with gooey marshmallows, melted chocolate, and a buttery graham cracker crust — all baked in one pan! Perfect for parties, holidays, or when you want that nostalgic flavor without leaving your kitchen. Get the full recipe, plus tips for slicing clean bars and getting that perfect golden marshmallow top. Save this dessert bar recipe for summer and beyond!

If you're a s'mores fan, you're in the right place.

I've got recipes for Mini S'mores Pies to S'mores cookies, how to make s'mores and how to make s'mores without graham crackers, air fryer s'mores not to mention s'mores dip.

It's endless, my fascination with melted chocolate and marshmallow.

One of my most popular posts is all about how to make s'mores without graham crackers.

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Recipe

Yield: 16 rectangular bars

Starbucks Copycat S'mores Bars

4.4 Stars (15 Reviews)

Copycat Starbucks S'mores bars have layers of graham cracker crust, melted milk chocolate, and toasted marshmallows for an easy baked s'mores dessert.

Prep Time: 20 minutes

Cook Time: 20 minutes

Additional Time: 30 minutes

Total Time: 1 hour 10 minutes

Ingredients

1-¼ cups graham cracker crumbs
5 Tablespoons butter, melted
¼ cup granulated sugar
4 full-size Hershey bars (1.55 ounces each--6.2 ounces total)
2.5 ounces sweetened condensed milk
3 cups mini marshmallows (approximately ½ bag or 5 ounces of marshmallows)

Instructions

Gather your ingredients.

Preheat oven to 350·°F.
Prepare an 8x8 pan and line with parchment paper. Use binder clips to hold the parchment paper to the pan. (optional)
Prepare the crust: combine graham cracker crumbs, granulated sugar and melted butter.

Press crumb mixture firmly into an even layer in the prepared pan.

Bake at 350°F for 7 to 10 minutes.
Remove pan from oven and line with chocolate bars.
Drizzle sweetened condensed milk over the bars.
Sprinkle miniature marshmallows over the top.
Bake at 350°F for about 20 minutes or until the marshmallows have softened and the tops have turned golden brown. Oven temperatures vary so check bars at 15 minutes.
Let cool at room temperature for an hour and then chill in the fridge before slicing.
Once well-chilled, use a sharp knife to slice the bars.

Notes

You don't need to bake this graham cracker crust but if you want it to hold together better, you should bake it for 7 to 10 minutes.

Don't skip the sweetened condensed milk drizzle. It helps to hold the graham cracker, chocolate and marshmallows together.. You can buy squeeze bottles of condensed milk now so you don't have to store partially used cans in your fridge.

For serving, I cut the bars four rows across and four rows down to get 16 bars, which are 2 by 2 inches.

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This post and/or recipe may contain affiliate links, which means if you click through and make a purchase, I'll earn a commission. As an Amazon Associate I earn from qualifying purchases. See Disclosure policy.

Nutrition Information

Yield 16 Serving Size 1
Amount Per Serving Calories 212Total Fat 4gSaturated Fat 3gUnsaturated Fat 1gCholesterol 11mgSodium 71mgCarbohydrates 44gFiber 0gSugar 33gProtein 1g

Nutrition information is an estimate as I am not a registered dietician.

Best Copycat Starbucks S'mores Bars