S’mores Cookie Bars

Oh, these S’mores Cookie Bars! They just scream cozy evenings around a campfire, even if you’re just in your kitchen. I remember the first time I made them, I was trying to capture that perfect s’mores magic without all the fuss of a bonfire, and these bars absolutely nailed it. The gooey marshmallow, the rich chocolate, and that unmistakable graham cracker crunch – it’s all there in one delightful bite. If you’re looking for a dessert that brings smiles and a touch of nostalgic comfort, you’ve found it with these S’mores Cookie Bars (Recipe + Video).

Why You’ll Love This S’mores Cookie Bars (Recipe + Video)

• They capture the classic s’mores flavor in a super easy bar form. No campfire needed!
• The texture is incredible: soft, chewy cookie, gooey marshmallow, and melty chocolate.
• They’re surprisingly simple to make, perfect for any home baker, even beginners.
• These bars are a crowd-pleaser, ideal for parties, potlucks, or just a sweet treat at home.

Ingredients You’ll Need

• Unsalted Butter: Using unsalted butter lets you control the salt content in your baking. Make sure it’s softened to room temperature – this helps it cream properly with the sugar for a light, fluffy base.
• Brown Sugar: Packed light or dark brown sugar adds moisture and a wonderful caramel-like flavor, contributing to that chewy cookie texture.
• Large Egg: This acts as a binder and adds richness. Room temperature eggs combine more easily with other ingredients, creating a smoother batter.
• Pure Vanilla Extract: Don’t skip this! It enhances all the other flavors and adds a warm, inviting aroma.
• All-Purpose Flour: Make sure to spoon and level your flour to avoid adding too much, which can make your bars dry.
• Graham Cracker Crumbs: These are essential for that signature s’mores flavor. You can buy them pre-crushed or crush your own graham crackers.
• Baking Powder: This is our leavening agent, giving the cookie base a bit of lift and tenderness.
• Salt: A little salt balances the sweetness and brings out all the delicious flavors.
• Semi-Sweet Chocolate Chips: These melt into gooey pockets of chocolatey goodness. You can use milk chocolate if you prefer, but semi-sweet offers a nice contrast to the sweet marshmallow.
• Marshmallow Creme: This is the secret to that perfectly gooey marshmallow layer! Store-bought “Fluff” works great, or you can make your own.

How to Make S’mores Cookie Bars (Recipe + Video) Step by Step

First things first, let’s get our oven ready. Preheat it to 350°F (177°C) and grab an 8-inch or 9-inch square baking pan. Line it with parchment paper, leaving a bit of an overhang on the sides. This little trick makes it so much easier to lift the cooled bars out later – trust me on this one!

Next, in a big bowl, we’re going to cream together the softened butter and brown sugar. Use your handheld or stand mixer on medium-high speed for about 3 minutes until it’s light and fluffy. Then, beat in your room temperature egg and vanilla extract until everything is combined. Don’t worry if it looks a little curdled; that’s totally normal! Scrape down the sides of the bowl to make sure everything gets mixed in.

In a separate medium bowl, whisk together your dry ingredients: the flour, graham cracker crumbs, baking powder, and salt. Now, gradually add this flour mixture to your wet ingredients and beat on medium speed until just combined. You’ll end up with a lovely cookie dough. Press about two-thirds of this dough evenly into your prepared pan. It will be a thin layer, and it’s a bit sticky, so don’t be afraid to use your hands to get it spread out. Then, spread that delicious marshmallow creme evenly over the dough. It’s sticky, but do your best to get a nice, even layer. Sprinkle the chocolate chips over the marshmallow. Finally, mold the remaining cookie dough into flat pieces and layer them on top of the chocolate chips. You won’t cover everything, and that’s exactly how it should be – some chocolate and marshmallow peeking through is part of the charm!

My Top Tips for Success

• I always make sure my butter and egg are at room temperature. It makes a huge difference in the texture of your cookie dough.
• Lining the pan with parchment paper with an overhang is a lifesaver for easy removal and clean-up. Don’t skip this step!
• When pressing the dough into the pan, if it’s too sticky, lightly flour your hands or use a piece of parchment paper to help press it down.
• Don’t overbake! The bars are done when the top is lightly golden brown. They’ll continue to set as they cool.
• Cooling completely before cutting is key. I know it’s hard to wait, but those gooey layers need time to firm up for clean slices.

Common Mistakes to Avoid

• Overmixing the dough: Mixing the flour too much can lead to tough bars. Mix until just combined.
• Not softening butter: Cold butter won’t cream properly, resulting in a denser, less tender cookie base.
• Overbaking the bars: Baking for too long will make your bars dry and less gooey. Watch for that light golden brown color.
• Cutting the bars too soon: If you cut them while warm, the marshmallow and chocolate will be very runny, making a mess. Patience is a virtue here!

How to Store S’mores Cookie Bars (Recipe + Video)

• Room Temperature: Cover and store leftover bars at room temperature for up to 1 week.

Frequently Asked Questions

Can I use homemade marshmallow creme?

Yes, absolutely! Store-bought “Fluff” works great, but if you have a favorite homemade marshmallow creme recipe, feel free to use half of it for these bars.

Can I use a different size baking pan?

This recipe is designed for an 8-inch or 9-inch square baking pan. Using a different size might affect the thickness and baking time, so stick to these sizes for best results.

Why are my bars falling apart when I cut them?

Most likely, you tried to cut them before they were completely cooled. The marshmallow and chocolate need time to set up fully, so make sure they are entirely cool before slicing.

Can I add different types of chocolate?

You can! While semi-sweet chocolate chips are called for, feel free to experiment with milk chocolate chips or even chopped chocolate bars if you prefer.

Can I freeze these S’mores Cookie Bars?

While you can, the texture of the marshmallow might change slightly after freezing and thawing. They are definitely best enjoyed fresh or stored at room temperature for up to a week.

I hope you give these S’mores Cookie Bars (Recipe + Video) a try! They truly bring a little bit of campfire magic right into your home. If you bake them, I’d love to hear how much you and your loved ones enjoyed them!

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