Name: S'mores Cookie Bars
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: American
Ingredients: 1 cup graham cracker crumbs; 1/2 cup all-purpose flour; 1/2 teaspoon baking soda; 1/4 teaspoon salt; 1/2 cup unsalted butter, softened; 3/4 cup brown sugar; 1/2 cup granulated sugar; 1 large egg; 1 teaspoon vanilla extract; 1 cup chocolate chips; 1 cup mini marshmallows

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I needed a quick treat for the kids after school. I wanted something that used pantry staples and baked fast. I started making an easy bar that felt like a campfire treat. It fits in a baking dish and cuts into pieces for snacks or lunchboxes.

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I make S’mores Cookie Bars when I want something simple and fast. They bake in about 25 minutes and cool while we tidy up. I keep the parts on hand and pull this together when time is short.

This recipe turns cookie dough, graham crumbs, chocolate, and marshmallows into a single baked bar. The result is a sweet, slightly crunchy base with melted chocolate and soft, toasted marshmallow pockets on top. People often make this for after-school snacks, casual get-togethers, or bake sales. If you like easy tray bakes, try this dish or compare it to other simple snacks like banana oatmeal bars for different uses of pantry staples.

Ingredients

1 cup graham cracker crumbs, 1/2 cup all-purpose flour, 1/2 teaspoon baking soda, 1/4 teaspoon salt, 1/2 cup unsalted butter, softened, 3/4 cup brown sugar, 1/2 cup granulated sugar, 1 large egg, 1 teaspoon vanilla extract, 1 cup chocolate chips, 1 cup mini marshmallows

The graham crumbs give a s’mores-like base and add texture. Flour and baking soda set the dough. Salt balances the sweet. Butter and the sugars make a soft, chewy cookie layer. The egg and vanilla hold the dough together and add flavor. Chocolate chips provide melty pockets and the mini marshmallows give that toasted, gooey bite. For other simple, fun recipes using common ingredients, see this easy pantry idea.

Directions

Preheat your oven to 350°F (175°C) and grease a 9×9 inch baking dish.
In a medium bowl, combine graham cracker crumbs, flour, baking soda, and salt.
In another bowl, cream together the butter, brown sugar, and granulated sugar until smooth. Add the egg and vanilla, mixing well.
Gradually add the dry ingredients to the wet ingredients, stirring until combined.
Fold in the chocolate chips.
Spread half of the cookie dough into the prepared baking dish.
Sprinkle the mini marshmallows evenly over the dough, then spread the remaining cookie dough on top.
Bake for 20-25 minutes, or until the edges are golden and the center is set.
Allow to cool before cutting into bars. Enjoy your delicious s’mores cookie bars!

Notes: Preheating ensures even baking. Mixing dry into wet gradually stops overworking the dough. Spreading half the dough first keeps the marshmallows from sinking. Bake until the center is set but not jiggly; bars will firm as they cool. This version works well when you want a quick pan dessert.

How to serve this recipe

Cut the bars into squares and serve at room temperature. These go well with a cold glass of milk or a cup of coffee. For parties, place them on a platter with a napkin stack so guests can grab one. You can warm a bar briefly in the microwave for 5–8 seconds to soften the chocolate. For picnics, wrap single bars in foil or wax paper for easy transport. This dish fits casual meals and snack times.

How to store this recipe

Store cooled bars in an airtight container at room temperature for up to 3 days. If your kitchen is warm, keep them in the fridge to prevent extra melting; they will last about 5 days chilled. For longer storage, freeze slices in a single layer on a tray, then move to a freezer bag for up to 2 months. Thaw at room temperature or warm briefly before serving. Use containers that seal well to keep marshmallows from drying.

Tips to make this recipe

Use room-temperature butter so it creams easily with the sugars. If dough seems stiff, press it between lightly floured hands. To keep marshmallows from burning, place them under a layer of dough as directed. If the top browns too fast, tent with foil for the last 5–10 minutes. For a more even chocolate spread, chop some chips slightly before folding in. For other baking tips and small recipe swaps, check this tried recipe link: simple baking swaps.

Variation

Swap half the chocolate chips for white chocolate for a sweeter bar. Add a handful of chopped nuts for crunch. Use larger marshmallows if you like big toasted pockets; just press them down slightly so they stay inside. You can press a thin layer of peanut butter on the base before adding marshmallows for a peanut-chocolate twist. Variations are easy because the base is flexible, but large changes to texture may need small bake time adjustments.

FAQs

Q: Can I use instant marshmallows?

A: Yes. Mini marshmallows work best for even coverage.

Q: Can I make this gluten-free?

A: Use a gluten-free flour blend and gluten-free graham crumbs.

Q: Do I have to chill the dough?

A: No. This recipe bakes from room temperature dough.

Q: Can I halve the recipe?

A: Yes. Use a smaller baking dish and reduce bake time slightly.

Q: Will the marshmallows melt into the dough?

A: They soften and meld but keep some shape if layered as directed.

Conclusion

This dish is a fast, everyday tray bake that feels like a small celebration. It uses simple parts and one pan. You can make it for snacks, school treats, or a casual coffee break. For another take and a tested version, you can read the original S’mores Cookie Bars guide. For a slightly different twist and notes from another cook, see a second S’mores Cookie Bars version.