These S’mores Cookie Bars are a heavenly combination of graham cracker and brown sugar cookie dough, gooey marshmallow creme, and a generous layer of semi-sweet chocolate chips. They bring all the nostalgic flavors of classic s’mores into a handheld treat that’s perfect for satisfying your sweet tooth. Whether you’re a fan of traditional s’mores or just love chocolatey, marshmallow goodness, these bars are sure to be a hit.

Why You’ll Love This Recipe

If you’re a s’mores fan, these cookie bars are the ultimate treat. The graham cracker crumbs in the cookie dough provide that signature s’mores crunch, while the marshmallow creme and melted chocolate chips create a gooey, irresistible center. The best part? No campfire required! These bars are easy to make and perfect for parties, picnics, or whenever you’re craving a delicious, shareable dessert. The combination of textures—from the chewy marshmallow to the crunchy graham cracker crust and melty chocolate—makes each bite unforgettable. S’mores Cookie Bars

Ingredients

1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
3/4 cup (150g) packed light or dark brown sugar
1 large egg, at room temperature
1 teaspoon pure vanilla extract
1 cup (125g) all-purpose flour (spooned & leveled)
1 cup (120g) graham cracker crumbs (about 8 full-sheet graham crackers)
1/2 teaspoon baking powder
1/4 teaspoon salt
1 cup (180g) semi-sweet chocolate chips
1 heaping cup marshmallow creme (store-bought “Fluff” or 1/2 recipe of homemade marshmallow creme)

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

Directions

Preheat the oven to 350°F (177°C). Line an 8-inch square or 9-inch square baking pan with parchment paper, leaving enough overhang on the sides for easy removal after cooling. Set aside.
In a large bowl, beat together the butter and brown sugar on medium-high speed for about 2 minutes using a handheld or stand mixer fitted with the paddle attachment.
Add the egg and vanilla extract and beat until combined. Scrape down the sides and bottom of the bowl as needed. The mixture may appear curdled, but that’s okay.
In a medium bowl, whisk together the flour, graham cracker crumbs, baking powder, and salt. Gradually add this dry mixture to the wet ingredients, beating on medium speed until combined.
Press about 2/3 of the graham cookie dough into the prepared pan. The layer will be thin and sticky, so use your hands if needed.
Spread the marshmallow creme evenly over the dough layer. This may be tricky since the marshmallow creme is sticky, but try to get an even layer.
Layer the chocolate chips evenly on top of the marshmallow creme. Mold the remaining dough into flat pieces and layer them on top of the chocolate chips. Some chocolate chips and marshmallow creme will be exposed.
Bake the bars for 25-30 minutes, or until the top is lightly golden brown.
Remove from the oven and cool completely on a wire rack.
Once cooled, lift the bars out of the pan using the parchment paper overhang. Cut into squares and serve.

Servings and timing

Servings: 16 bars
Prep Time: 15 minutes
Cooking Time: 25 minutes
Total Time: 3 hours (includes cooling)

Variations

Add nuts: If you like a bit of crunch, add chopped pecans or walnuts to the cookie dough or sprinkle on top with the chocolate chips.
Different chocolate: Use milk chocolate or dark chocolate chips instead of semi-sweet chocolate for a sweeter or more intense chocolate flavor.
Peanut butter: For a peanut butter twist, add a swirl of peanut butter to the marshmallow creme layer or mix peanut butter chips into the cookie dough.
Flavored marshmallows: Try using flavored marshmallow creme, like strawberry or chocolate, for a unique twist on the classic s’mores flavor.

Storage/reheating

Storage: Store the bars in an airtight container at room temperature for up to 4 days.
Reheating: These bars are best served at room temperature, but you can microwave them for a few seconds to get the marshmallow and chocolate warm and gooey again.

FAQs

Can I use homemade marshmallow creme?

Yes, you can use homemade marshmallow creme in this recipe. Simply make a batch of marshmallow fluff and use it as a substitute for the store-bought version.

Can I freeze these cookie bars?

Yes, these s’mores cookie bars freeze well. After they’ve cooled, wrap them tightly in plastic wrap and foil and store in the freezer for up to 2 months. Thaw at room temperature before serving.

What if I don’t have graham crackers?

If you don’t have graham crackers, you can substitute with other cookie crumbs like digestive biscuits or even vanilla wafer cookies to maintain the texture and flavor of the crust.

Can I make these cookie bars without the chocolate chips?

Yes, if you prefer a more marshmallow-centered treat, you can skip the chocolate chips or replace them with mini chocolate chunks for a slightly different texture.

Can I double the recipe?

Yes, you can double the recipe and bake the bars in a 9×13-inch pan. Just be sure to increase the baking time by a few minutes, and keep an eye on them so they don’t overbake.

How do I know when the bars are done baking?

The bars are done when the top is golden brown and a toothpick inserted into the center comes out with a few moist crumbs. The bars will firm up as they cool.

Can I add more marshmallow creme?

If you’re a fan of extra marshmallowy goodness, feel free to increase the amount of marshmallow creme. Just keep in mind that the more you add, the gooier the bars will be.

How do I cut these bars neatly?

Let the bars cool completely before cutting. Use a sharp knife to cut them into squares, wiping the knife between cuts to ensure clean edges.

Can I make these bars gluten-free?

Yes, you can use gluten-free graham cracker crumbs and a gluten-free all-purpose flour blend to make these bars gluten-free.

Are these bars too sweet?

These bars have a perfect balance of sweetness from the brown sugar, marshmallow creme, and chocolate chips. However, you can reduce the sugar slightly if you prefer a less sweet treat.

Conclusion

These S’mores Cookie Bars are a delicious, gooey, and indulgent treat that brings all the flavors of s’mores into a convenient, easy-to-eat bar form. The combination of graham cracker cookie dough, marshmallow creme, and chocolate chips is simply irresistible. Whether you’re serving them at a summer party or enjoying them as a comforting desse