Starbucks Copycat S’mores Bars

Remember the Starbucks s’mores bars everyone was obsessed with? They’re back in homemade form! These easy bars have a buttery graham cracker crust, melty chocolate, and toasted marshmallows for the ultimate no-campfire-required treat.

Good Luck Eating Just One

Only 5 ingredients needed: No complicated shopping list here! A few pantry staples come together to create a bakery-worthy dessert.
No special baking skills required: If you can press a crust into a pan and layer ingredients, you can make these bars.
Perfect for sharing: Made in a 9×13 pan, these bars are ideal for parties, potlucks, bake sales, and family gatherings.

Ingredients for Starbuck’s S’mores Bars

Overhead shot of labeled Starbuck's s'mores bars ingredients.

Chocolate Swap: You can use milk or semi-sweet chocolate chips instead of Hershey’s bars. You’ll need about 3 cups.
Clean Slices: Chill the bars completely in the fridge before cutting. Spray your knife with nonstick spray for easier, cleaner slices through the marshmallow layer.
Broiling Tip: Watch the marshmallows closely while broiling, they toast quickly and can burn fast.

How to Make Starbucks S’mores Bars

If s’mores are your thing, these bars take that flavor to the next level. All the classic flavors baked into easy, shareable bars. Just layer everything in, bake, and chill until set. Try my no-bake s’mores pie next!

Make the Crust: Preheat the oven to 350ºF. Grease a 9 x 13-inch baking dish with nonstick cooking spray. In a bowl, mix the graham cracker crumbs, sugar, and melted salted butter until combined. Pour the mixture into the prepared dish and spread it evenly. Press the crust firmly with your fingers or a measuring cup. Bake for 5–6 minutes, then remove from the oven and let it cool slightly.
Add the Chocolate: Lay the Hershey’s chocolate bars on top of the crust.
Melt: Place the pan in the oven for 3 minutes, until the chocolate looks shiny and is starting to melt. Use a spatula to spread out the melted chocolate bars.
Add and Brown the Marshmallows: Sprinkle the mini marshmallows over the chocolate. Broil for 2–3 minutes, until golden brown. Watch closely so they don’t burn. Refrigerate Starbucks s’mores bars until fully cooled and set. Cut into squares and serve.

Graham crack crumbs made into a crust and smashed into the bottom of the baking dish.

Chocolate bars added to the top of the graham cracker crust.

Must Have Tools For This Recipe

9 x 13-inch Pan: The perfect size for layering and baking.
Sharp Knife: For cutting clean, even squares.
Food Processor: Makes it easy to crush graham crackers into fine crumbs for the crust.

Copycat Starbucks S’mores Bars

These easy s'mores bars are made with a graham cracker crust, melted chocolate, and toasted marshmallows for a simple, irresistible dessert.

Course Dessert

Cuisine American

Keyword copycat starbucks s’mores bars, s’mores, S’mores Bars Recipe, starbucks copycat s’mores bars recipe

Prep Time 10

Cook Time 12

Chill 1

Total Time 1 22

Servings slices

Calories 445kcal

Author Alyssa Rivers

Equipment

1 9 x 13-inch baking dish

Ingredients

2 ½ cups graham cracker crumbs 2 sleeves of graham crackers, crushed
¼ cup granulated sugar
12 tablespoons melted salted butter ¾ cup
4 (4.4-ounce) Hershey's chocolate bars
1 (10-ounce) package mini marshmallows

Instructions

Preheat the oven to 350 degrees Fahrenheit and grease a 9 x 13-inch baking dish with nonstick cooking spray.
In a bowl, mix 2 ½ cups graham cracker crumbs, ¼ cup granulated sugar, and 12 tablespoons melted salted butter until well combined.
Pour the graham cracker mixture into the prepared baking dish and spread it out evenly. Use your fingers or a measuring cup to firmly press down the crust.
Bake the crust for 5-6 minutes, remove from the oven, and let cool slightly.
Lay 4 (4.4-ounce) Hershey's chocolate bars on top of the crust and place in the oven for 3 minutes, until the chocolate looks shiny and is starting to melt. Use a spatula to spread out the melted chocolate bars.
Place 1 (10-ounce) package mini marshmallows on top of the chocolate and broil in the oven for 2-3 minutes, until golden brown. Watch them carefully so they don't burn.
Place the pan in the refrigerator until the bars are completely cooled. Once fully cooled and set, cut into squares and serve.

Notes

Make Ahead and Storage Instructions

Leftovers: Store in an airtight container at room temperature for up to 3 days or in the fridge for up to 5 days.
Freezer: Store in an airtight container in the freezer for up to 2 months.
Make-Ahead: These are perfect to make a day in advance. Store in the fridge after baking, then slice the bars when ready to serve.