Indulge in Our Ooey Gooey Marshmallow Cookie Bars Recipe Today

Soft, chewy ooeey gooey marshmallow cookie bars dance between decadent sweetness and childhood nostalgia.

Melted marshmallows create a dreamy texture that makes hearts melt instantly.

Chocolate chips nestle perfectly within each tender bite, promising pure comfort.

Simple ingredients come together in magical ways, creating something irresistibly delicious.

Warm from the oven, these bars invite you to savor every gooey morsel.

Memories of campfires and sweet treats will flood back with each incredible slice.

You won’t be able to resist cutting another piece of this incredible dessert.

Marshmallow Cookie Bars That Ooze Sweet Gooey Goodness

• Elevate Comfort Baking: These marshmallow cookie bars bring pure joy to your kitchen with minimal effort and maximum deliciousness.
• Quick Kitchen Magic: Prepare these irresistible bars in under an hour, perfect for spontaneous dessert cravings or last-minute sweet treats.
• Crowd-Pleasing Indulgence: Blend classic s'mores flavors with cookie bar convenience, creating a universally loved dessert that appeals to kids and adults.
• Customizable Creativity: Easily adapt the recipe by swapping chocolate chips or adding different mix-ins to suit personal taste preferences and pantry ingredients.

Ooey Gooey Marshmallow Cookie Bars Ingredient Guide

• Butter: Rich, nutty base that adds depth of flavor and creates a golden brown color.
• Brown Sugar, Granulated Sugar: Sweet elements that provide caramel undertones and structure.
• Salt: Enhances overall flavor and balances sweetness.

• Eggs: Provide structure and help bind the ingredients together.
• Vanilla Extract: Adds warm, aromatic flavor to the cookie bars.

• All-Purpose Flour: Foundational ingredient that gives texture and structure to the bars.
• Chocolate Chips: Provides rich, melty chocolate pockets throughout the dessert.
• Mini Marshmallows: Soft, gooey element that creates signature s'mores-like experience.
• Graham Crackers: Adds classic s'mores crunch and nostalgic flavor profile.

Ooey Gooey Marshmallow Cookie Bar Instructions

Step 1: Warm Up the Oven

Turn the oven to 329°F.

Grab an 8×8-inch baking pan and line it with parchment paper so nothing sticks.

Step 2: Create Golden Butter Magic

Heat butter in a saucepan over medium flame.

Watch it transform into a golden-brown liquid with a rich, nutty scent.

Let it cool down a bit after removing from heat.

Step 3: Mix Wet Ingredients

• Browned butter
• Brown sugar
• Granulated sugar
• Salt

Whisk everything until smooth and creamy.

Add eggs and vanilla, mixing until perfectly blended.

Step 4: Fold in Dry Goodies

Gently mix in flour, leaving a few flour streaks.

• Chocolate chips
• Mini marshmallows
• Crushed graham crackers

Stir until ingredients are evenly distributed.

Step 5: Bake the Base

Pour the mixture into the prepared pan.

Spread evenly and bake for 30 minutes.

Step 6: Create Gooey Topping

Pull the pan out of the oven.

• Chocolate chips
• Mini marshmallows

Return to the oven for 5 more minutes.

For a golden finish, use a kitchen torch or broil for 30 seconds.

Step 7: Cool and Cut

Let the bars cool completely in the pan.

Slice into delectable squares.

Step 8: Devour and Celebrate

Serve these irresistible bars and watch everyone’s eyes light up with joy!

Marshmallow Bar Baking Tips for Gooey Perfection

• Brown butter slowly and carefully, watching for golden color and nutty aroma to enhance deep, rich flavor without burning.
• Gently fold flour with minimal stirring to keep cookie bars tender and avoid developing tough gluten structure.
• Sprinkle extra marshmallows near end of baking for beautiful golden-brown tops that create delightful caramelized texture.
• Use precise oven temperature to ensure even baking and prevent burning, checking bars around 25-minute mark for perfect doneness.
• Experiment with graham cracker-to-chocolate chip ratios to create different levels of crunchiness and sweetness in your cookie bars.

Store Ooey Gooey Marshmallow Cookie Bars

• Store cooled cookie bars in an airtight container in the refrigerator for up to 5 days, keeping them fresh and preventing marshmallow from becoming too sticky.
• Wrap individual bars tightly in plastic wrap, then place in a freezer-safe container for maximum 3 months. Seal to prevent freezer burn and maintain original texture.
• Warm refrigerated or thawed bars in microwave for 10-15 seconds on medium power, or place in preheated oven at 300°F for 5 minutes to restore softness and revive gooey marshmallow texture.
• Let frozen or refrigerated bars sit at room temperature for 15-20 minutes before serving to bring back their original soft, chewy consistency.

Treats That Match Marshmallow Cookie Bars

• Sip Chocolate Milk Pairing: Indulge in a classic cold glass of chocolate milk that perfectly complements the gooey marshmallow and rich chocolate chip flavors in these decadent cookie bars. The creamy sweetness balances the warm, toasted marshmallow notes and enhances the overall dessert experience.
• Pair with Vanilla Bean Ice Cream: Serve a scoop of smooth vanilla bean ice cream alongside these warm cookie bars for a heavenly contrast of temperatures and textures. The cool, creamy vanilla beautifully cuts through the richness of the browned butter and melted chocolate.
• Match with Salted Caramel Espresso: Elevate the dessert with a shot of salted caramel espresso that highlights the deep, nutty browned butter undertones. The slight bitterness of espresso provides a sophisticated counterpoint to the sweet, gooey marshmallow bars.
• Complement with Toasted Hazelnut Latte: A warm toasted hazelnut latte echoes the graham cracker and nutty browned butter elements, creating a harmonious flavor profile that enhances the cookie bars' complexity and warmth.

Marshmallow Cookie Bar Add-Ins

• Gluten-Free S'mores Bars: Replace wheat flour with a gluten-free blend, ensuring the same rich texture while making the recipe safe for those with gluten sensitivities.
• Vegan Marshmallow Delight: Substitute butter with coconut oil, use vegan chocolate chips, and swap eggs with flax eggs. Choose plant-based marshmallows to create a cruelty-free version of the classic treat.
• Nutty Graham Cracker Alternative: Incorporate chopped almonds or pecans instead of graham crackers for added crunch and a different flavor profile. This variation provides extra protein and a satisfying nutty undertone.
• Low-Sugar Option: Use a sugar substitute like monk fruit sweetener or reduce the sugar content by half. Add mashed bananas or unsweetened applesauce to maintain moisture and sweetness without excess sugar.

FAQs

• What ingredients give these bars their unique flavor?

The combination of browned butter, chocolate chips, mini marshmallows, and crushed graham crackers creates a rich, complex taste that mimics classic s’mores with a gourmet twist.

• Why is browning butter important in this recipe?

Browning butter develops a deeper, nuttier flavor profile that adds complexity and depth to the cookie bars, elevating them from ordinary to extraordinary.

• How do I know when the butter is properly browned?

Look for a golden-brown color and a nutty, caramel-like aroma. The butter will have small brown specks at the bottom of the pan, which indicate it’s perfectly browned.

• Can I tell if the bars are done baking?

The edges will be set and slightly golden, and the center will look slightly underbaked but will firm up as they cool. Avoid overbaking to maintain the gooey, soft texture.

Ooeey Gooey Marshmallow Cookie Bars Recipe

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4.9 from 28 reviews

• Total Time: 45 minutes
• Yield: 16 1x

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Description

Indulgent marshmallow cookie bars blend creamy sweetness with rich chocolate layers, creating a nostalgic dessert that melts hearts. Gooey centers and crisp edges promise pure comfort, inviting you to savor each delightful bite.

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Ingredients

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Main Ingredients:

• 320 g (11.3 oz) unsalted butter
• 4 eggs
• 340 g (12 oz) all-purpose flour
• 1 cup chocolate chips
• 1 cup mini marshmallows

Sweeteners:

• 320 g (11.3 oz) brown sugar
• 160 g (5.6 oz) granulated sugar

Flavor Enhancers:

• 4 g (0.14 oz) salt
• 8 g (0.28 oz) vanilla extract
• 6 crushed graham crackers

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Instructions

1. Preheat the oven to 329°F and prepare an 8×8-inch baking pan by lining it with parchment paper, ensuring complete coverage for easy removal.
2. Transform butter into a rich, golden-brown state by carefully heating it in a saucepan over medium heat, developing a deep nutty fragrance. Remove from heat and let cool slightly.
3. Create a smooth base by whisking together the browned butter, brown sugar, granulated sugar, and salt until fully integrated and creamy.
4. Incorporate eggs and vanilla extract into the sugar mixture, blending until the mixture becomes light and uniform in texture.
5. Gently fold flour into the wet ingredients, maintaining a few flour streaks to ensure a tender texture. Carefully mix in chocolate chips, mini marshmallows, and crushed graham crackers, distributing them evenly throughout the dough.
6. Transfer the batter to the prepared pan, spreading it uniformly with a spatula to create an even layer.
7. Bake for 30 minutes, creating a golden foundation for the cookie bars.
8. Remove from oven and strategically sprinkle additional chocolate chips and mini marshmallows across the surface.
9. Return to the oven for 5 minutes, allowing the new toppings to melt and integrate with the base.
10. For an enhanced finish, use a kitchen torch to lightly caramelize the marshmallows or briefly broil to achieve a golden-brown topping.
11. Allow the bars to cool completely in the pan, which helps them set and makes cutting easier.
12. Slice into square portions and serve, revealing the gooey, decadent layers of marshmallow, chocolate, and graham cracker.

Notes

• Brown the butter carefully, stirring constantly to prevent burning and develop a rich, nutty flavor without scorching.
• Use room temperature eggs to ensure smooth, even mixing and prevent lumpy cookie dough texture.
• Avoid overmixing the batter to keep the bars tender and prevent tough, dense results.
• Let the bars cool completely before cutting to achieve clean, neat slices and prevent crumbling.
• For gluten-free version, swap graham crackers with gluten-free graham-style crackers and use gluten-free flour blend.
• Store bars in an airtight container at room temperature for up to 3 days to maintain maximum gooeyness and freshness.
• Enhance marshmallow toasting by using a kitchen torch for more controlled, even caramelization.
• Experiment with different chocolate types like dark, milk, or white chocolate for unique flavor variations.

• Prep Time: 15 minutes
• Cook Time: 30 minutes
• Category: Desserts, Snacks
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 16
• Calories: 292
• Sugar: 20 g
• Sodium: 0.25 g
• Fat: 16 g
• Saturated Fat: 10 g
• Unsaturated Fat: 6 g
• Trans Fat: 0 g
• Carbohydrates: 35 g
• Fiber: 1 g
• Protein: 2 g
• Cholesterol: 41 mg