Craving a sweet treat that's both fun and easy to make? Look no further than these S'mores Cookie Bars! With warm, gooey marshmallows, rich chocolate, and a hint of graham crackers, this recipe combines all your favorite campfire flavors. In this guide, I’ll share straightforward steps, tips, and fun twists to elevate your baking game. Let's get baking and create a delightful dessert that everyone will love!
Error: Error code: 429 - {'error': {'message': 'You exceeded your current quota, please check your plan and billing details. For more information on this error, read the docs: https://platform.openai.com/docs/guides/error-codes/api-errors.', 'type': 'insufficient_quota', 'param': None, 'code': 'insufficient_quota'}}
Ingredients
Main Ingredients
- 1 cup unsalted butter, softened to room temperature
- 1 cup packed brown sugar
- 1/2 cup granulated sugar
- 2 large eggs, at room temperature
- 1 teaspoon pure vanilla extract
The main ingredients form the heart of your bars. The unsalted butter gives the bars a rich flavor and soft texture. Brown sugar adds moisture and a hint of caramel. Granulated sugar balances the sweetness. Eggs bind the ingredients together, while vanilla extract adds a lovely aroma.
Dry Ingredients
- 2 1/2 cups all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup graham cracker crumbs
Dry ingredients create the structure of the bars. All-purpose flour provides the base, while baking soda helps them rise. Salt enhances the sweetness and balances flavors. Graham cracker crumbs bring that classic s'mores taste, making these bars special.
Mix-Ins
- 1 cup semi-sweet chocolate chips
- 1 cup mini marshmallows
- Extra chocolate chips and mini marshmallows for topping
Mix-ins are where the magic happens. Semi-sweet chocolate chips melt into gooey pockets of chocolate. Mini marshmallows add sweetness and a soft texture. I love to top the bars with extra chocolate chips and marshmallows. This makes them even more delicious and fun!

Step-by-Step Instructions
Preparing the Baking Pan
1. First, preheat your oven to 350°F (175°C). This step helps the bars bake evenly.
2. Next, grease a 9x13 inch baking pan or line it with parchment paper. This makes it easy to lift the bars out later.
Mixing the Wet Ingredients
1. In a large bowl, cream together 1 cup of softened butter, 1 cup of brown sugar, and 1/2 cup of granulated sugar. Mix until it’s light and fluffy, about 3-5 minutes.
2. Add in the 2 large eggs, one at a time. Mix well after each egg. Stir in 1 teaspoon of pure vanilla extract until it’s all blended together.
Combining Dry Ingredients
1. In a separate bowl, whisk together 2 1/2 cups of all-purpose flour, 1 teaspoon of baking soda, and 1/2 teaspoon of salt. This step ensures everything mixes well.
2. Slowly add the dry mix to the wet mix. Stir gently until just combined. Be careful not to overmix; this keeps the bars soft.
Assembling the Cookie Bars
1. Spread half of the cookie dough evenly in the bottom of your greased pan. This forms the base layer.
2. Sprinkle on some extra chocolate chips and mini marshmallows. This adds gooeyness to each bite.
3. Crumble the remaining dough over the top, leaving some gaps. This allows the filling to peek through.
Baking Process
1. Place the pan in the oven and bake for 25-30 minutes. You'll know it's done when the edges are golden brown.
2. Check the center; it should look set. The bars will firm up as they cool.
Cooling and Serving
1. Let the cookie bars cool in the pan for at least 15 minutes. This helps them keep their shape.
2. Cut them into squares for serving. A tip: drizzle some melted chocolate on top for a pretty finish. Enjoy your delicious treat!
Tips & Tricks
Perfecting Your Bars
To make perfect S'mores cookie bars, avoid overmixing the dough. When you mix too much, the bars can turn out tough. Mix until just combined for a soft, chewy texture. It's also key to ensure even distribution of ingredients. Fold in chocolate chips, mini marshmallows, and graham cracker crumbs gently. This way, every bite has a burst of flavor.
Presentation Ideas
For a stunning finish, drizzle melted chocolate on top of your cookie bars. This adds a rich touch that everyone loves. Then, sprinkle crushed graham crackers over the melted chocolate. It not only looks nice but also adds extra crunch and flavor. These small touches make your bars even more appealing.
Common Mistakes to Avoid
One common mistake is undercooking or overcooking the bars. Keep an eye on them while baking. They should be golden brown around the edges but set in the center. Another mistake is mismeasuring ingredients. Use precise measurements for the best results. A little extra flour or sugar can change the texture. Always double-check your measuring cups for success!
Error: Error code: 429 - {'error': {'message': 'You exceeded your current quota, please check your plan and billing details. For more information on this error, read the docs: https://platform.openai.com/docs/guides/error-codes/api-errors.', 'type': 'insufficient_quota', 'param': None, 'code': 'insufficient_quota'}}
Variations
Flavor Additions
You can add nuts for a fun twist. Chopped pecans or walnuts work great. They add a nice crunch and flavor. You can also use different types of chocolate. Dark chocolate gives a rich taste. Milk chocolate is sweet and creamy. You might even try white chocolate for a different vibe. Each type of chocolate changes the taste of your bars.
Gluten-Free Options
If you want gluten-free bars, swap graham crackers for gluten-free ones. Look for brands that taste great. You can use almond flour or coconut flour instead of regular flour. These options keep the texture nice and tender. Just make sure to check the amounts, as they differ from all-purpose flour.
Vegan Adaptations
To make these bars vegan, swap butter for coconut oil or vegan butter. For eggs, you can use flax eggs or applesauce. Both options keep the bars moist. Choose dairy-free chocolate chips to complete your treat. This way, you can enjoy the flavors without animal products.
Storage Info
Best Storage Practices
To keep your S'mores cookie bars fresh, store them in an airtight container. This helps to keep the bars soft and chewy. You can keep them at room temperature for up to five days. If you want them to last longer, store them in the fridge. Just know that this may change the texture a bit.
Freezing Instructions
You can freeze the cookie bars for up to three months. Cut them into squares first. Wrap each square tightly in plastic wrap. Then, place them in a freezer-safe bag. To enjoy later, take out the bars and let them thaw in the fridge overnight. This keeps them tasty and fresh.
Shelf Life
S'mores cookie bars stay fresh for about five days at room temperature. If stored in the fridge, they can last up to a week. Look for signs of spoilage, like a dry texture or a strange smell. If you notice these, it’s best to toss them out.
FAQs
Can I make S'mores Cookie Bars ahead of time?
Yes, you can make these bars ahead of time. Bake them and let them cool completely. Store them in an airtight container at room temperature. They stay fresh for about three days. If you want to keep them longer, freeze them for up to three months. Just remember to wrap them well.
How do I know when the bars are done baking?
Check the edges for a golden brown color. The center should look set, not jiggly. Use a toothpick to test. Insert it into the center; it should come out clean or with a few moist crumbs. Don’t worry if they seem a bit soft. They will firm up as they cool.
Can I customize the mix-ins in this recipe?
Absolutely! You can change the mix-ins to suit your taste. Try different chocolates like milk or white chocolate. Add nuts for crunch, or use peanut butter chips for a twist. You can even swap mini marshmallows for larger ones, but cut them down to size.
What are some serving suggestions for S'mores Cookie Bars?
You can serve these bars warm for a gooey treat. Drizzle melted chocolate on top for extra sweetness. Add a sprinkle of crushed graham crackers for a nice touch. Pair them with a scoop of ice cream for a delightful dessert.
How do I prevent the bars from becoming too hard after baking?
Prevent them from hardening by not overbaking. Bake just until the edges are golden. Let them cool in the pan for a short time before slicing. Store them in an airtight container to keep them soft. If they do harden, warm them in the microwave for a few seconds.
You’ve learned how to make delicious S'mores Cookie Bars using simple ingredients and easy steps. We covered everything: from mixing wet and dry ingredients to baking and cooling. Remember, practice makes perfect, so avoid common mistakes like overmixing. You can also customize the recipe with nuts or try gluten-free options. Store them properly to enjoy their freshness longer. Get creative and enjoy your tasty treats! Now, gather your ingredients and start baking your perfect bars today.