If you're looking for a quick and fun treat, these S'mores Cookie Bars are perfect! I’ll show you how to mix gooey chocolate and melty marshmallows into a simple cookie base. In this recipe, you’ll find easy steps and useful tips to make these bars at home. Whether it's a family night or a party, everyone will love them. Let’s dive into the delicious world of s'mores cookie magic!
Why I Love This Recipe
- Deliciously Chewy: These cookie bars have the perfect balance of chewy and gooey textures that make each bite irresistible.
- Easy to Make: This recipe is straightforward and requires minimal effort, making it perfect for baking novices and seasoned pros alike.
- Perfect for Sharing: With 12-16 servings, these bars are ideal for gatherings, parties, or just a sweet treat at home.
- Customizable: Feel free to add different mix-ins like nuts or dried fruit to personalize these bars to your liking!
Ingredients
Essential Ingredients for S'mores Cookie Bars
To make S'mores Cookie Bars, you need:
- 1 cup unsalted butter, softened
- 1 cup brown sugar
- ½ cup granulated sugar
- 2 large eggs
- 2 teaspoons vanilla extract
- 3 cups all-purpose flour
- 1 teaspoon baking soda
- ½ teaspoon salt
- 1 cup chocolate chips
- 1 cup mini marshmallows
- 1 cup graham cracker crumbs
- Extra chocolate and marshmallows for topping
These ingredients combine to create a sweet and chewy treat that mimics the classic campfire s'more.
Suggested Products
For the best flavor, consider these products:
- Chocolate Chips: Use semi-sweet or milk chocolate chips. Brands like Ghirardelli or Nestlé work well.
- Graham Crackers: Honey Maid or Nabisco graham crackers add great taste.
- Marshmallows: Jet-Puffed mini marshmallows are perfect for this recipe.
Using quality products can elevate the taste of your cookie bars.
Common Substitutions
If you need to swap ingredients, here are some ideas:
- Butter Alternatives: You can use coconut oil or vegan butter for a dairy-free option.
- Sugar Alternatives: Try using coconut sugar or a sugar substitute like Stevia for a healthier twist.
These substitutions can help you adjust the recipe to fit your dietary needs without losing the delicious flavor.

Step-by-Step Instructions
Preparing the Baking Pan
First, preheat your oven to 350°F (175°C). This helps the cookie bars bake evenly. Next, grab a 9x13 inch baking pan. You can grease it with cooking spray. Alternatively, line it with parchment paper. This makes it easy to lift out the bars later.
Mixing Wet Ingredients
In a large bowl, place 1 cup of softened unsalted butter. Add 1 cup of brown sugar and ½ cup of granulated sugar. Mix these together until they are light and fluffy. This should take about 3-5 minutes. Next, add 2 large eggs, one at a time. Make sure to mix well after each egg. Finally, stir in 2 teaspoons of vanilla extract for flavor.
Combining Dry Ingredients
In a separate bowl, whisk together 3 cups of all-purpose flour, 1 teaspoon of baking soda, and ½ teaspoon of salt. This mix helps your bars rise well. Gradually add this dry mix to the wet ingredients. Mix until you see no dry flour. Be careful not to overmix; we want soft bars!
Assembling the Cookie Bars
Now it’s time to fold in 1 cup of graham cracker crumbs and 1 cup of chocolate chips. Then, add 1 cup of mini marshmallows. Mix gently. Take about two-thirds of the cookie dough and spread it into your prepared pan. Press it down evenly. Sprinkle more chocolate chips and mini marshmallows on top. Finally, dollop the rest of the dough on top and spread it gently.
Baking and Cooling Process
Bake your cookie bars in the oven for 25-30 minutes. Look for a golden brown top and firm edges. Once done, remove them from the oven. Let them cool in the pan for about 10-15 minutes. For a fun twist, you can broil the top for 1-2 minutes. This gives a nice toasted marshmallow flavor, but watch carefully to avoid burning!
Tips & Tricks
Best Practices for Perfect Cookie Bars
To make the best S'mores Cookie Bars, follow these simple tips:
- Use room temperature butter. It mixes better and gives a nice texture.
- Measure your flour correctly. Use the spoon and level method. This helps avoid dense bars.
- Don’t overmix the dough. Mix just until combined for soft, chewy bars.
- Press the dough evenly. This ensures even baking and a nice rise.
- Add more chocolate and marshmallows on top. This makes for a gooey, yummy finish.
Troubleshooting Common Issues
You might face some issues when baking. Here’s how to fix them:
- Undercooked bars: If they are too soft in the center, bake for a few more minutes. Check often to prevent burning.
- Overbaking: Bars will feel hard. Remove them from the oven once they are golden brown. Remember, they firm up as they cool!
- Dry bars: This can happen if you bake too long or use too much flour. Keep an eye on the time.
Serving Suggestions
Serving your S'mores Cookie Bars can be fun and creative:
- Serve warm. They taste best warm, with melted chocolate and marshmallows.
- Drizzle with chocolate. A chocolate drizzle adds a nice touch.
- Top with graham cracker crumbs. It adds crunch and looks great!
- Pair with ice cream. Vanilla ice cream adds a cool contrast to the warm bars.
- Use fun plates. Colorful plates can make your treat look even more inviting.
Pro Tips
- Use Room Temperature Ingredients: Ensure your butter and eggs are at room temperature for a smoother batter and better texture.
- Don’t Overmix: Mix the dry ingredients into the wet just until combined to prevent tough cookie bars.
- Customize Your Toppings: Feel free to add different types of chocolate or nuts to personalize your cookie bars.
- Storage Tips: Store leftovers in an airtight container at room temperature for up to a week for the best taste.
Variations
Different Toppings
You can change the toppings for your S'mores Cookie Bars. Nuts add crunch. Try chopped pecans or walnuts for a great mix. You can also use different types of chocolate. Dark chocolate offers a rich taste. Milk chocolate gives a sweet touch. White chocolate adds a creamy flavor. Sprinkle on toppings before baking to melt into the bars, or add them after baking for a fun look.
Chocolate and Marshmallow Swaps
If you want to try different flavors, swap the chocolate and marshmallows. For a vegan treat, use dark chocolate without dairy. There are also flavored marshmallows like strawberry or coconut. These swaps can change the taste of your bars. You can also look for sugar-free options if that fits your needs. Just make sure the substitutes work well in baking.
Cookie Bar Size Alternatives
You can make different sizes of cookie bars. For mini bars, use a smaller pan. This way, you get bite-sized treats. They are perfect for parties or snacks. If you want fun shapes, use cookie cutters after they cool. This method makes the bars look great on a dessert table. You can even make layered treats by stacking smaller bars with frosting in between.
Storage Info
How to Store Leftover Cookie Bars
To keep your S'mores cookie bars fresh, store them in an airtight container. Place parchment paper between layers to prevent sticking. They can last up to five days at room temperature. If you want to keep them longer, consider refrigeration. This can help maintain their texture.
Freezing Guidelines for S'mores Cookie Bars
You can freeze S'mores cookie bars for later enjoyment. First, let them cool completely. Then, cut them into squares. Wrap each square tightly in plastic wrap. Place the wrapped squares in a freezer bag. They will stay fresh for up to three months. When you're ready to enjoy them, just thaw at room temperature.
Reheating Tips for Maintaining Freshness
To reheat your S'mores cookie bars, place them in the microwave for about 10-15 seconds. This warms them up and softens the marshmallows. If you prefer a crispier texture, pop them in the oven at 350°F (175°C) for 5-10 minutes. Just watch them closely to avoid overbaking. Enjoy that gooey goodness!
FAQs
Can I make S'mores Cookie Bars ahead of time?
Yes, you can make S'mores Cookie Bars ahead of time. Bake them and let them cool completely. Once cool, store them in an airtight container. They stay fresh for about three days at room temperature. For longer storage, keep them in the fridge for up to a week. You can also freeze them! Wrap each bar in plastic wrap, then place them in a freezer bag. They last for about three months in the freezer.
What is the best way to cut cookie bars?
Cutting cookie bars can be easy with the right method. First, cool the bars in the pan for about 10-15 minutes. Then, use a sharp knife to make clean cuts. For neat edges, wipe the knife with a damp cloth between cuts. If you lined the pan with parchment paper, lift the bars out for easier cutting. This way, you get perfect squares or rectangles.
Can I add other flavors or ingredients to the recipe?
Absolutely! You can customize your S'mores Cookie Bars with other flavors. Try adding nuts like walnuts or pecans for crunch. You can swap regular chocolate chips for dark or white chocolate chips. If you love peanut butter, mix in some peanut butter chips. Feel free to get creative with flavored marshmallows too. Just remember to keep the balance so it still tastes like a S'mores treat!
You learned how to make tasty s'mores cookie bars. We covered essential ingredients and offered product suggestions. You now know common substitutions for dietary needs. I shared step-by-step instructions for mixing, baking, and cooling. You also received tips to fix issues and variations to try. Finally, I explained storage and reheating methods to keep them fresh.
Enjoy making these delicious treats. They are perfect for gatherings or cozy nights at home. Don't be afraid to get creative with flavors!