Can I use regular marshmallows instead of mini ones?

Technically yes, but mini marshmallows work best for this recipe! The small size melts into perfect gooey pockets rather than creating one thick layer that could pull off when slicing. If you only have large marshmallows, try cutting them into quarters with kitchen shears (lightly oiled scissors help prevent sticking).

How do I prevent burnt marshmallows on top?

Watch them like a hawk during those last 5 minutes! My trick: add the marshmallows after the cookie layer bakes, then just give them enough time to puff and lightly brown—no more than 5 minutes. If your oven runs hot, try 4 minutes. For extra insurance, you can tent the pan with foil during this last bake.

Can I double this recipe for a crowd?

Absolutely! Just use a 9x13-inch pan instead (double all ingredients). Bake the base layer for 22-25 minutes before adding marshmallows. These make perfect potluck desserts —I always double the batch for game nights and school events. Pro tip: the bars will be thicker, so extend cooling time to 2 hours before cutting.

Why does my graham cracker crust crumble when slicing?

Two likely culprits: Not enough butter in the crust mixture (measure carefully!) or not pressing it firmly enough. Really pack it down—I use the bottom of a glass to create an even, compact layer. Also, make sure you let the bars cool completely; cutting warm makes everything more likely to crumble.

Can I make these ahead and freeze them?

You sure can—they freeze beautifully! Here's how: Cool completely, then wrap individual bars in parchment paper before freezing in an airtight container. Thaw at room temp for 30 minutes when ready to eat. For best texture, I actually prefer freezing the unbaked dough—just assemble as directed (minus marshmallows) in a freezer-safe pan, wrap well, and bake straight from frozen (add 5 extra minutes). Add marshmallows at the end as usual!

Decadent S'mores Cookie Bars You'll Crave Forever

Name: S'mores Cookie Bars
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: American
Ingredients: 1 1/2 cups graham cracker crumbs; 1/2 cup unsalted butter, melted; 1/4 cup granulated sugar; 1 cup all-purpose flour; 1/2 tsp baking powder; 1/4 tsp salt; 1/2 cup unsalted butter, softened; 3/4 cup brown sugar; 1 large egg; 1 tsp vanilla extract; 1 cup chocolate chunks; 1 1/2 cups mini marshmallows

S’mores Cookie Bars

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Gooey s’mores cookie bars with graham cracker crust, chocolate, and marshmallow that slice clean for parties and potlucks.

Author: Sophia Collins
Prep Time: 15 min
Cook Time: 25 min
Total Time: 40 min
Yield: 16 bars 1x
Category: Dessert
Method: Baking
Cuisine: American
Diet: Vegetarian

Ingredients

Scale

1 1/2 cups graham cracker crumbs
1/2 cup unsalted butter, melted
1/4 cup granulated sugar
1 cup all-purpose flour
1/2 tsp baking powder
1/4 tsp salt
1/2 cup unsalted butter, softened
3/4 cup brown sugar
1 large egg
1 tsp vanilla extract
1 cup chocolate chunks
1 1/2 cups mini marshmallows

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Instructions

Preheat oven to 350°F. Line a 9×9-inch pan with parchment paper.
Mix graham cracker crumbs, melted butter, and sugar. Press into the pan.
Whisk flour, baking powder, and salt in a bowl.
Cream softened butter and brown sugar. Add egg and vanilla, then mix in dry ingredients.
Fold in chocolate chunks. Spread dough over crust.
Bake 20 minutes. Top with marshmallows, bake 5 more minutes.
Cool completely before slicing.

Notes

Use a knife dipped in hot water for clean slices.
Add crushed graham crackers on top for extra crunch.

Nutrition

Serving Size: 1 bar
Calories: 220
Sugar: 18g
Sodium: 85mg
Fat: 11g
Saturated Fat: 7g
Unsaturated Fat: 3g
Trans Fat: 0g
Carbohydrates: 28g
Fiber: 1g
Protein: 2g
Cholesterol: 35mg

Find it online: https://kitchenuser.net/smores-cookie-bars-recipe/