Chocolate Marshmallow Cookie Bars

Short Description

Chocolate Marshmallow Cookie Bars are an indulgent treat featuring a soft and chewy cookie base, a gooey marshmallow layer, and a smooth chocolate topping. These bars are perfect for satisfying your sweet tooth and are great for parties, potlucks, or a special dessert at home.

Why You’ll Love This Recipe

  • Deliciously gooey texture – a combination of soft cookie, fluffy marshmallow, and creamy chocolate.
  • Perfectly sweet and rich – a balance of chocolate and marshmallow flavors.
  • Easy to make – no special equipment or techniques required.
  • Great for sharing – ideal for gatherings and celebrations.
  • Customizable – add nuts, different chocolate varieties, or caramel for a twist.

Ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

For the Cookie Base:

  • Unsalted butter, softened
  • Brown sugar, packed
  • Granulated sugar
  • Large eggs
  • Vanilla extract
  • All-purpose flour
  • Baking soda
  • Salt
  • Chocolate chips

For the Marshmallow Layer:

  • Marshmallow creme

For the Chocolate Topping:

  • Semi-sweet chocolate chips
  • Coconut oil or butter

Directions

Prepare the Cookie Base:

  1. Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish and set aside.
  2. In a large mixing bowl, cream together the butter, brown sugar, and granulated sugar until smooth and fluffy.
  3. Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
  4. In a separate bowl, whisk together the flour, baking soda, and salt.
  5. Gradually add the dry ingredients to the wet mixture, stirring until just combined.
  6. Fold in the chocolate chips, then press the dough evenly into the prepared baking dish.
  7. Bake for 20-25 minutes, or until the edges are golden brown. Let the cookie base cool completely.

Add the Marshmallow Layer:

  1. Once cooled, spread the marshmallow creme evenly over the cookie base.

Prepare the Chocolate Topping:

  1. In a microwave-safe bowl, melt the semi-sweet chocolate chips and coconut oil in 30-second intervals, stirring between each, until smooth.
  2. Pour the melted chocolate over the marshmallow layer, spreading evenly.

Set and Serve:

  1. Allow the bars to set at room temperature or refrigerate until the chocolate hardens.
  2. Cut into squares and enjoy!

Servings and Timing

  • Servings: 12 bars
  • Preparation Time: 15 minutes
  • Cooking Time: 25 minutes
  • Total Time: 40 minutes
  • Calories: Approximately 320 per serving

Variations

  • Nutty Crunch: Add chopped walnuts, pecans, or almonds to the cookie base for extra texture.
  • Peanut Butter Twist: Swirl peanut butter into the marshmallow layer before adding the chocolate topping.
  • White Chocolate Option: Substitute white chocolate chips for the topping.
  • Caramel Drizzle: Drizzle caramel sauce over the chocolate layer before chilling.
  • S’mores Style: Add crushed graham crackers to the cookie dough for a classic s’mores flavor.

Storage/Reheating

  • Storage: Store in an airtight container at room temperature for up to 3 days or in the refrigerator for up to 1 week.
  • Freezing: Freeze individual bars in a sealed container for up to 3 months. Thaw at room temperature before serving.
  • Reheating: Enjoy as-is, or microwave for 10-15 seconds for a warm, gooey treat.

FAQs

Can I use regular marshmallows instead of marshmallow creme?

Yes, but melt them slightly before spreading for easier application.

What can I use instead of coconut oil in the chocolate topping?

You can substitute with butter or vegetable oil for a similar effect.

How do I make clean cuts without cracking the chocolate?

Let the bars sit at room temperature for a few minutes before cutting with a warm knife.

Can I use dark chocolate instead of semi-sweet?

Yes, dark chocolate will add a richer, less sweet flavor.

Do these bars need to be refrigerated?

They can be stored at room temperature, but refrigeration helps the chocolate stay firm.

Can I add graham cracker crumbs to the cookie base?

Yes, replacing ½ cup of flour with crushed graham crackers gives a s’mores-like taste.

Can I make these bars gluten-free?

Yes, use a 1:1 gluten-free flour substitute.

What is the best way to melt chocolate without a microwave?

Use a double boiler on the stovetop to melt the chocolate gently.

How do I prevent the marshmallow layer from sticking to the knife when cutting?

Lightly grease your knife or dip it in hot water before slicing.

Can I make these ahead of time?

Yes, they can be made 1-2 days in advance and stored in the fridge.

Conclusion

Chocolate Marshmallow Cookie Bars are a delicious, gooey, and chocolatey dessert that is easy to make and perfect for any occasion. Whether you enjoy them as a snack, share them at a party, or pack them in lunchboxes, these bars will always be a hit. Try them today and savor the irresistible combination of cookie, marshmallow, and chocolate!

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Chocolate Marshmallow Cookie Bars

Chocolate Marshmallow Cookie Bars

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  • Author: Grace
  • Prep Time: 15 minutes
  • Cook Time: 25 minutes
  • Total Time: 40 minutes
  • Yield: 12 bars 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

These Chocolate Marshmallow Cookie Bars are the ultimate gooey, chocolatey treat! A soft and chewy cookie base, a fluffy marshmallow layer, and a rich chocolate topping make this dessert irresistible. Perfect for parties, bake sales, or whenever you need a sweet indulgence!


Ingredients

Units Scale

For the Cookie Base:

  • 1 cup unsalted butter, softened
  • 1 cup brown sugar, packed
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 2 1/2 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 1/2 cups chocolate chips

For the Marshmallow Layer:

  • 2 cups marshmallow creme

For the Chocolate Topping:

  • 2 cups semi-sweet chocolate chips
  • 2 tablespoons coconut oil or butter

Instructions

1️⃣ Preheat & Prepare:

  • Preheat oven to 350°F (175°C).
  • Grease a 9×13-inch baking dish and set it aside.

2️⃣ Make the Cookie Dough:

  • In a large bowl, beat butter, brown sugar, and granulated sugar until creamy.
  • Add eggs one at a time, mixing well after each addition. Stir in vanilla extract.
  • In a separate bowl, whisk together flour, baking soda, and salt. Gradually mix into the wet ingredients.
  • Fold in chocolate chips.

3️⃣ Bake the Cookie Base:

  • Press the cookie dough evenly into the prepared baking dish.
  • Bake for 20-25 minutes, or until edges are golden brown.
  • Let it cool completely before adding the next layers.

4️⃣ Add the Marshmallow Layer:

  • Spread marshmallow creme evenly over the cooled cookie base.

5️⃣ Make the Chocolate Topping:

  • In a microwave-safe bowl, melt chocolate chips and coconut oil in 30-second intervals, stirring until smooth.
  • Pour the melted chocolate over the marshmallow layer, spreading evenly.

6️⃣ Let It Set & Serve:

  • Let the bars set at room temperature or chill in the refrigerator until the chocolate hardens.
  • Cut into squares and enjoy!

Notes

  • For an extra crunchy texture, sprinkle crushed graham crackers or nuts on top before the chocolate sets.
  • Store leftovers in an airtight container at room temperature for up to 3 days or refrigerate for a firmer texture.
  • Substitute dark chocolate chips for a richer flavor

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