Marshmallow Crunch Brownies are a delightful twist on the classic brownie. These treats combine fudgy chocolate with gooey marshmallows and a crunchy topping, making them perfect for any occasion. Whether you’re hosting a party, celebrating a birthday, or just craving something sweet, these brownies will impress your friends and family. With their rich flavor and unique texture, it’s no wonder everyone asks for the recipe!

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Brownie Base:
- For the Topping:
- How to Make Marshmallow Crunch Brownies
- Step 1: Preheat the Oven
- Step 2: Mix the Brownie Batter
- Step 3: Incorporate Dry Ingredients
- Step 4: Bake the Brownies
- Step 5: Prepare the Topping
- Step 6: Finish Up
- How to Serve Marshmallow Crunch Brownies
- With Ice Cream
- Drizzled with Sauce
- Topped with Whipped Cream
- Served with Fresh Fruit
- How to Perfect Marshmallow Crunch Brownies
- Best Side Dishes for Marshmallow Crunch Brownies
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Marshmallow Crunch Brownies
- Reheating Marshmallow Crunch Brownies
- Frequently Asked Questions
- What makes these brownies crunchy?
- How do I make my brownies more chocolatey?
- Can I use regular Rice Krispies instead of Cocoa Krispies?
- How should I store leftover Marshmallow Crunch Brownies?
- Can I add nuts to these brownies?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Easy to Make: Whether you choose to create the brownies from scratch or enhance a box mix, this recipe is straightforward.
- Irresistible Flavor: The combination of chocolate, marshmallows, and peanut butter creates a heavenly taste that’s hard to resist.
- Perfect for Any Occasion: These brownies are suitable for parties, potlucks, or cozy nights in.
- Customizable: Feel free to add nuts or swap out ingredients based on your preferences!
- Crowd-Pleaser: Everyone loves these brownies! They’re sure to be a hit with both kids and adults.
Tools and Preparation
Before you start baking, gather your tools and equipment. Having everything ready ensures a smooth process while making your Marshmallow Crunch Brownies.
Essential Tools and Equipment
- 9×13 inch baking pan
- Mixing bowls
- Whisk
- Measuring cups and spoons
- Microwave-safe dish
- Spatula
Importance of Each Tool
- 9×13 inch baking pan: This size is perfect for evenly cooking your brownies while providing enough space for toppings.
- Mixing bowls: Using different sizes helps in organizing ingredients without any mess.
- Whisk: A whisk ensures that your batter is well combined and fluffy.
Ingredients
These are THE BEST brownies. You can make the brownies from scratch or dress up a box mix! Everyone asks for the recipe!
For the Brownie Base:
- 2 cups white sugar
- 3/4 cup vegetable oil
- 4 large eggs
- 2 teaspoons vanilla
- 1 1/2 cup dark cocoa powder
- 1/4 teaspoon salt
- 1/2 cup chocolate chips or chopped chocolate
For the Topping:
- 1 bag mini marshmallows (10.5 oz. or 5.5 cups)
- 2 cups chocolate chips (or chopped chocolate)
- 1 1/4 cups peanut butter
- 5 tablespoons butter
- 3 cups Rice Krispies, gluten free if needed (I actually used Cocoa Krispies because I strangely can’t find plain here. Not complaining.)
How to Make Marshmallow Crunch Brownies
Step 1: Preheat the Oven
Preheat your oven to 350°F. Lightly grease your 9×13 inch baking pan to prevent sticking.
Step 2: Mix the Brownie Batter
Combine the sugars and oil in a mixing bowl. Beat until well combined.
1. Add in the eggs and vanilla.
2. Whisk together for about two minutes until smooth.
Step 3: Incorporate Dry Ingredients
Add in the cocoa powder and salt to the batter. Blend until smooth.
1. Fold in the chocolate chips.
2. Pour this mixture into your prepared pan.
Step 4: Bake the Brownies
Bake your brownies for about 17 minutes.
1. Top with mini marshmallows after this time.
2. Continue baking for an additional 8 minutes.
3. Allow them to cool while preparing the topping.
Step 5: Prepare the Topping
In a microwave-safe dish, combine chocolate chips, peanut butter, and butter.
1. Microwave in thirty-second intervals, stirring each time until smooth and melted.
2. Fold in Rice Krispies once melted.
Step 6: Finish Up
Spread dollops of the topping evenly across the cooled brownies.
1. Wait until completely cooled before cutting into squares.
2. Store in the fridge for chewier brownies or at room temperature for gooier ones.
Enjoy your delicious Marshmallow Crunch Brownies!
How to Serve Marshmallow Crunch Brownies
Marshmallow Crunch Brownies are a delightful treat that can be served in various ways. Whether you are hosting a gathering or enjoying a cozy night at home, these brownies can be paired with different accompaniments to enhance their flavor and presentation.
With Ice Cream
- Vanilla Ice Cream: A classic pairing that balances the rich chocolate and marshmallow.
- Mint Chocolate Chip: Adds a refreshing twist that complements the brownies’ sweetness.
Drizzled with Sauce
- Chocolate Sauce: For chocolate lovers, drizzle some warm chocolate sauce over the brownies for extra indulgence.
- Caramel Sauce: A drizzle of caramel adds a sweet, buttery flavor that pairs beautifully.
Topped with Whipped Cream
- Fresh Whipped Cream: Light and fluffy, whipped cream adds a nice texture contrast to the fudgy brownies.
- Flavored Whipped Cream: Consider using flavors like vanilla or almond for an extra layer of taste.
Served with Fresh Fruit
- Berries: Strawberries or raspberries add a fresh tartness that balances the sweetness of the brownies.
- Bananas: Sliced bananas provide a creamy texture and natural sweetness.

How to Perfect Marshmallow Crunch Brownies
To ensure your Marshmallow Crunch Brownies turn out perfectly every time, follow these handy tips. They will help you achieve the best texture and flavor.
- Use Quality Ingredients: High-quality cocoa powder and chocolate will elevate the flavor of your brownies.
- Don’t Overmix: Mix only until ingredients are combined to keep your brownies tender.
- Check for Doneness: Use a toothpick; it should come out with moist crumbs, not wet batter, when they’re done baking.
- Cool Completely: Allowing the brownies to cool completely will make cutting them easier and improve their texture.
- Experiment with Toppings: Feel free to customize the topping by adding nuts or different cereals for added crunch.
Best Side Dishes for Marshmallow Crunch Brownies
Pairing side dishes with your Marshmallow Crunch Brownies can create a well-rounded dessert experience. Here are some fantastic options to consider.
- Chocolate Fondue: A fun dipping option where guests can dip pieces of brownie into warm chocolate.
- Fruit Salad: A light side that offers freshness and balances the richness of the brownies.
- Cheese Platter: Include creamy cheeses like brie or goat cheese for an unexpected savory twist.
- Coffee: A hot cup of coffee enhances the chocolate flavors while providing a cozy vibe.
- Milkshake: Blend up a delicious milkshake for a nostalgic dessert drink alongside your brownies.
- Hot Cocoa: Serve warm hot cocoa as an additional sweet treat that pairs wonderfully with chocolate desserts.
Common Mistakes to Avoid
Making Marshmallow Crunch Brownies can be easy, but there are a few common mistakes that can ruin your dessert. Here are some pitfalls to watch out for.
- Overmixing the batter: This can lead to dense brownies. Mix just until ingredients are combined.
- Skipping the cooling time: Cutting brownies while warm may cause them to crumble. Allow them to cool completely before slicing.
- Using the wrong pan size: A different pan size can affect baking time and texture. Stick to a 9×13 inch pan for best results.
- Not measuring ingredients properly: Accurate measurements are key. Use a kitchen scale for precision, especially for dry ingredients.
- Neglecting oven temperature: An incorrect temperature can lead to uneven baking. Always preheat your oven and use an oven thermometer if needed.
Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to one week.
- Keep layers separated with parchment paper to avoid sticking.
Freezing Marshmallow Crunch Brownies
- Wrap brownies tightly in plastic wrap and then in aluminum foil.
- Store in the freezer for up to three months.
Reheating Marshmallow Crunch Brownies
- Oven: Preheat to 350°F, place brownies on a baking sheet, and heat for about 10 minutes.
- Microwave: Heat individual pieces for 10-15 seconds until warm.
- Stovetop: Place in a skillet over low heat, covering with a lid for even warming.
Frequently Asked Questions
What makes these brownies crunchy?
The addition of Rice Krispies provides a delightful crunch that complements the chewy marshmallows.
How do I make my brownies more chocolatey?
You can increase the amount of cocoa powder or add extra chocolate chips into the batter.
Can I use regular Rice Krispies instead of Cocoa Krispies?
Yes! Regular Rice Krispies will work just fine if you prefer them over Cocoa Krispies.
How should I store leftover Marshmallow Crunch Brownies?
Store them in an airtight container at room temperature or refrigerate them for a chewier texture.
Can I add nuts to these brownies?
Absolutely! Chopped nuts like walnuts or pecans would enhance flavor and texture.
Final Thoughts
These Marshmallow Crunch Brownies are not only delicious but also incredibly versatile. You can customize them by adding various toppings or mix-ins based on your preferences. Whether you choose classic chocolate chips, nuts, or even caramel swirls, these brownies are sure to impress anyone who tries them!
Did You Enjoy Making This Recipe? Please rate this recipe with ⭐⭐⭐⭐⭐ or leave a comment.
📖 Recipe Card
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Marshmallow Crunch Brownies
- Total Time: 40 minutes
- Yield: About 24 servings 1x
Description
Indulge in the ultimate dessert experience with Marshmallow Crunch Brownies. These delightful treats are a perfect fusion of rich, fudgy chocolate and fluffy marshmallows, topped with a satisfying crunchy finish. Ideal for any occasion—from birthday parties to cozy nights in—these brownies are sure to impress your friends and family. With an easy-to-follow recipe, you can whip up a batch that’s not only delicious but also customizable to suit your taste. Whether you stick to the classic version or add your favorite nuts or toppings, each bite promises a melt-in-your-mouth sensation that will leave everyone asking for more.
Ingredients
- 2 cups white sugar
- 3/4 cup vegetable oil
- 4 large eggs
- 2 teaspoons vanilla extract
- 1 1/2 cups dark cocoa powder
- 1/4 teaspoon salt
- 1/2 cup chocolate chips
- 1 bag mini marshmallows (10.5 oz.)
- 2 cups chocolate chips for topping
- 1 1/4 cups peanut butter
- 5 tablespoons butter
- 3 cups Rice Krispies
Instructions
- Preheat oven to 350°F and grease a 9×13 inch baking pan.
- In a mixing bowl, combine sugar and oil; blend well. Add eggs and vanilla, whisking until smooth.
- Mix in cocoa powder and salt; fold in chocolate chips.
- Pour batter into prepared pan and bake for 17 minutes. Top with mini marshmallows and bake for another 8 minutes; cool.
- For the topping, microwave chocolate chips, peanut butter, and butter until melted. Stir in Rice Krispies.
- Spread topping over cooled brownies, let set, then cut into squares.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie (50g)
- Calories: 220
- Sugar: 18g
- Sodium: 96mg
- Fat: 12g
- Saturated Fat: 5g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 25g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 25mg





