S’mores Cookie Bars

Why You’ll Love This Recipe

• Campfire vibes without the fire – all the cozy flavors of a s’more in easy-to-cut bars.

• Perfect for sharing – makes a full 9×13 pan worth of crowd-pleasing bars.

• Customizable – swap in your favorite chocolate or add extra marshmallows for extra gooeyness.

• Satisfies both cookie and s’mores cravings in one recipe!

Ingredients

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

• 7–8 graham cracker sheets (78–109 g total)

• 1 cup (226 g) unsalted butter, room temperature (2 sticks)

• ¾ cup (150 g) granulated sugar

• ¾ cup (150 g) light brown sugar, gently packed

• 2 large eggs

• 2 tsp vanilla extract

• 3 cups (360 g) all‑purpose flour

• ¾ tsp salt

• ¾ tsp baking soda

• ½ cup (135 g) semi‑sweet chocolate chips

• 1 cup (45 g) mini marshmallows

• 2 Hershey’s Milk Chocolate bars (1.55 oz/43 g each), broken into squares

Directions

1. Preheat oven to 375 °F. Line a 13×9-inch pan with parchment paper, leaving about 2-inch overhang on the sides.

2. Arrange graham crackers to cover the bottom of the pan, breaking as needed to fill gaps.

3. In a mixer fitted with the paddle attachment, cream together butter, granulated sugar, and brown sugar until light and fluffy.

4. Add eggs and vanilla; mix and scrape bowl to combine.

5. In a separate bowl, whisk together flour, salt, and baking soda.

6. Add the dry mixture, chocolate chips, and mini marshmallows to the butter mixture. Mix until just combined—don’t overmix.

7. Spread the cookie dough evenly over graham crackers and gently press flat. Optionally, sprinkle extra mini marshmallows on top.

8. Bake at 375 °F for 25–30 minutes, until golden brown and a toothpick from the center comes out clean. If the edges brown too quickly, tent with foil.

9. Remove from oven and immediately press the chocolate bar squares on top. Let cool 20–30 minutes before lifting out using parchment overhang. Serve warm or at room temperature.

Servings and timing

• Yield: 24 bars

• Prep time: 10 minutes

• Cook time: 30 minutes

• Total time: 40 minutes

Storage/reheating

• Store at room temperature in an airtight container or covered baking pan for up to 3 days.

• For firmer chocolate, store in the refrigerator—chocolate will set completely, but bars will be less gooey.

• Reheat a bar in the microwave for 10–15 seconds for that fresh-baked warmth.

Variations

• Chocolate swap: Use dark chocolate chunks, white chocolate chips, or peanut butter chips.

• Cookie mix-ins: Stir in chopped nuts, pretzels, or toffee bits for crunch.

• Flavor twist: Add a teaspoon of cinnamon or a hint of espresso powder to the dough.

• Campfire vibe: Replace mini marshmallows with larger ones or marshmallow fluff on top.

FAQs

1. What pan type works best for even baking?

A metal or aluminum 9×13 pan bakes more evenly than glass, which can brown edges too quickly.

2. Can I use gluten-free flour?

Yes you can swap in a 1:1 GF flour blend and expect the same delicious taste and texture.

3. How do I prevent over-browning?

If edges bake faster than the center, tent with foil toward the end of baking.

4. Can I make these ahead of time?

Absolutely! Bake the day before, cool completely, then store; bars will still taste fresh the next day.

5. Are substitutions for dairy-free butter okay?

Yes use a quality dairy-free stick butter and check your marshmallows are vegan if needed.

6. How do I cut clean slices?

Chill bars slightly in the fridge so chocolate firms up, then use a sharp knife for clean cuts.

9. Can I freeze these bars?

Yes wrap individual bars in plastic and freeze up to 2 months. Thaw at room temperature before serving.

10. What’s the difference between mini and regular marshmallows here?

Mini ones distribute more evenly throughout; regular marshmallows top the bars for extra gooey melt.

11. Can I scale the recipe smaller?

Halve all ingredients and bake in an 8×8 pan for about 20–25 minutes, watching closely.

12. Do I need to pre-break the chocolate bars?

No, breaking into squares post-bake allows them to melt gently onto warm bars without sinking.

Conclusion

These S’mores Cookie Bars bring together all the best parts of a classic s’more—crisp graham crackers, melty chocolate, and gooey marshmallows—into a sturdy, easy-to-serve format. Whether you’re feeding a crowd or craving a nostalgic treat, you’ll love how simple they are to make and how delicious they taste. Enjoy every chewy, chocolatey bite!