Flourless Marshmallow Crunch Brownies That Wow Your Taste Buds

Last Updated on February 12, 2026 by Aniela Recipes Team

When the craving for something sweet hits, there s nothing quite like the enticing aroma of freshly baked brownies wafting through the kitchen. Enter my Ultimate Flourless Marshmallow Crunch Brownies! These treats are a delightful fusion of fudgy goodness topped with a gooey layer of mini marshmallows and a crispy chocolate-peanut butter crunch that will have everyone reaching for a second piece.

As I whipped these up one rainy afternoon, I realized they re a perfect solution for those moments when you want to impress guests without spending hours in the kitchen. Whether you go all out and bake from scratch or take a shortcut with a boxed mix, these brownies deliver rich flavor and a comforting texture that s simply irresistible. So, grab your apron and let s delve into a dessert that s sure to become a cherished favorite in your home!

Why Love Flourless Marshmallow Crunch Brownies?

Delightfully Versatile: Whether you re a baking novice or a seasoned pro, these brownies can be made from scratch or with a boxed mix, making them accessible for everyone.

Irresistible Flavor: The rich, fudgy base paired with the sweet and gooey marshmallow topping creates an explosion of flavor that will please any palate.

Unique Texture: Enjoy the perfect contrast of soft brownies and a crispy chocolate-peanut butter topping, offering a delightful mouthfeel that s hard to resist.

Crowd-Pleaser: Perfect for parties or casual get-togethers, these brownies are sure to impress your guests and keep them coming back for more.

Quick and Easy: You can whip these up in under an hour, making them a time-saving treat for those unexpected sweet cravings.

Storage-Friendly: Enjoy leftovers for days simply store them in an airtight container to maintain freshness and flavor!

Flourless Marshmallow Crunch Brownies Ingredients

Perfect for your next baking adventure!

For the Brownie Base

• White Sugar Adds sweetness, but you can reduce it for a less sugary bite.
• Vegetable Oil Provides moisture; feel free to substitute it with melted butter for a richer taste.
• Large Eggs Essential binding agents that ensure your brownies have the perfect structure.
• Vanilla Enhances the flavor; opt for pure vanilla extract to achieve the best results.
• Dark Cocoa Powder Gives your brownies that deep chocolate flavor; unsweetened cocoa works just as well.
• Salt Balances the sweetness, but skip it if using salted butter.

For the Mix-Ins & Toppings

• Chocolate Chips Adds extra chocolate goodness; use semisweet or dark chocolate for a flavorful twist.
• Mini Marshmallows Create a gooey topping; larger marshmallows can be used but may need longer baking time.
• Chocolate Chips (for topping) Enhances flavor and gives added texture; mixing with white chocolate is also an option.
• Peanut Butter Brings creaminess and flavor; great nut-free alternatives are almond butter or sun butter.
• Butter Infuses richness; coconut oil can be a good substitute for a dairy-free version.
• Rice Krispies Adds a delightful crunch; other puffed rice cereals can also work in this delightful recipe.

How to Make Flourless Marshmallow Crunch Brownies

1. Preheat the oven to 350 °F (175 °C) and lightly grease a 9×13 inch baking pan to ensure your brownies slide out easily after baking.

2. Combine white sugar and vegetable oil in a mixing bowl, stirring until well mixed. Add large eggs and vanilla extract, whisking together until the mixture turns pale and fluffy.

3. Mix in dark cocoa powder and a pinch of salt to enhance flavor, then gently fold in chocolate chips until evenly combined. This creates the rich brownie base.

4. Pour the brownie batter into the prepared pan, spreading it evenly. Bake for 17 minutes, then remove from the oven and scatter mini marshmallows on top. Return to the oven to bake for an additional 8 minutes, until the marshmallows are gooey.

5. Prepare the topping by melting chocolate chips, peanut butter, and butter in a microwave-safe bowl. Heat in intervals, stirring until smooth, then fold in Rice Krispies for that signature crunch.

6. Cool the brownies completely before spreading the chocolate-peanut butter topping evenly over the surface. Allow it to set before cutting into squares for a neat presentation.

Optional: Serve with a drizzle of chocolate sauce for an extra indulgent touch!
Exact quantities are listed in the recipe card below.

What to Serve with Flourless Marshmallow Crunch Brownies?

Indulge in an unforgettable dessert experience when you complement your brownies with these delightful pairings.

• Vanilla Ice Cream: The creamy, coolness of vanilla ice cream contrasts perfectly with the warm, fudgy brownies, transforming each bite into a symphony of textures.

• Fresh Berries: Juicy strawberries or raspberries provide a refreshing burst of flavor that cuts through the richness, making each mouthful feel balanced and bright.

• Chocolate Sauce: Drizzling a warm chocolate sauce over your brownies elevates the chocolate experience, creating pure decadence that chocolate lovers will cherish.

• Whipped Cream: Light and airy whipped cream adds a velvety touch, enhancing the dessert s overall creaminess while providing a delightful contrast to the chewy brownie base.

• Coffee: A steaming cup of freshly brewed coffee perfectly complements the rich cocoa flavors, awakening your taste buds and offering a delightful pick-me-up after a sweet treat.

• Nutty Caramel Sauce: The sweet, nutty flavor of caramel pairs beautifully with the brownies, adding a layer of complexity that makes each serving uniquely satisfying.

• Mint Chocolate Chip Ice Cream: For a refreshing twist, try pairing with mint chocolate chip ice cream, as the mintiness contrasts beautifully with the brownies while enhancing their chocolatey goodness.

• A Glass of Milk: Classic and comforting, a chilled glass of milk is the quintessential beverage to wash down these rich, indulgent brownies, adding a nostalgic touch to your dessert experience.

Expert Tips for Flourless Marshmallow Crunch Brownies

Whisk Eggs Thoroughly: Ensure you beat the eggs well for light, airy brownies. This incorporation of air is key to a perfect rise.

Mind the Bake Time: Overbaking can dry out your brownies. Keep an eye on them, aiming for moist and slightly underbaked for the best texture.

Cool Before Cutting: Patience is crucial! Let the brownies cool completely before cutting to maintain their shape and prevent a messy outcome.

Use Quality Ingredients: Opt for high-quality cocoa powder and chocolate chips to enhance the rich flavor of your flourless marshmallow crunch brownies.

Experiment with Mix-Ins: Don t hesitate to add nuts or flavored extracts for a personalized twist. A teaspoon of espresso powder can intensify your chocolate flavor, too!

Flourless Marshmallow Crunch Brownies Variations

Feel free to get creative and customize these brownies to suit your tastes and dietary preferences!

• Nutty Twist: Substitute half of the chocolate chips with chopped nuts such as walnuts or pecans for added crunch and flavor.

• Espresso Boost: Add a teaspoon of espresso powder to the brownie batter for an enhanced chocolate flavor that coffee lovers will adore.

• Minty Fresh: Incorporate a few drops of mint extract into the brownie mix for a refreshing mint chocolate experience absolutely delightful!

• Berry Bliss: Toss in a handful of fresh or freeze-dried raspberries for a fruity contrast to the rich chocolate, creating a deliciously unexpected flavor.

• Coconut Delight: Mix in shredded coconut to the brownie base for a tropical twist that pairs beautifully with the crunchy topping.

• Gluten-Free Alternative: If you re looking for a gluten-free option, use almond flour in place of traditional all-purpose flour for a slightly nutty flavor boost.

• Spicy Kick: Add a pinch of cayenne pepper to the brownie batter for a daring touch of heat that contrasts wonderfully with the sweetness.

• Chocolate Lover s Dream: For extreme chocolate indulgence, mix together dark chocolate and milk chocolate chips in equal parts for a rich layering of flavors.

How to Store and Freeze Flourless Marshmallow Crunch Brownies

Room Temperature: Store brownies in an airtight container at room temperature for up to 5 days to maintain their soft and fudgy texture.

Fridge: For longer freshness, refrigerate the brownies in an airtight container for up to a week. Just allow them to come to room temperature before serving for the best taste.

Freezer: Freeze brownies individually wrapped in plastic wrap or in an airtight container for up to 3 months. Thaw in the fridge overnight before enjoying!

Reheating: To enjoy warm brownies, heat individual pieces in the microwave for about 10 15 seconds. This helps reintroduce some gooeyness to your flourless marshmallow crunch brownies.

Make Ahead Options

These Flourless Marshmallow Crunch Brownies are perfect for meal prep enthusiasts! You can prepare the brownie base up to 3 days in advance by mixing the ingredients and storing the batter in an airtight container in the refrigerator. This not only saves time on busy baking days but also helps the flavors meld beautifully. When you re ready to bake, simply pour the chilled batter into a greased pan and bake as instructed. Additionally, you can melt and prepare the chocolate-peanut butter topping up to 24 hours ahead as well, refrigerating it until just before spreading. This way, you maintain the quality and flavor of these indulgent brownies, ensuring they are just as delicious as if made fresh.

Flourless Marshmallow Crunch Brownies Recipe FAQs

What type of chocolate is best for the brownies?
Absolutely! For the richest flavor, I recommend using high-quality semisweet or dark chocolate chips. They ll melt beautifully into the brownie batter, enhancing the chocolatey taste. If you prefer a sweeter option, you can mix in some milk chocolate chips as well!

How can I tell if my brownies are done baking?
Very! When it comes to baking brownies, the toothpick method is your best friend. Insert a toothpick into the center of the brownies; they should be slightly underbaked but not liquidy. If it comes out with a few moist crumbs, you re good to go. If it s clean, they might be overbaked keep that in mind for that fudgy texture!

How should I store my brownies?
For sure! Store your flourless marshmallow crunch brownies in an airtight container at room temperature for up to 5 days. This will keep them soft and fudgy. If you want them to last longer, refrigerate them for up to a week. Just let them come to room temperature before serving for the ultimate softness and flavor.

Can I freeze the brownies for later?
Definitely! To freeze your brownies, wrap individual pieces tightly in plastic wrap, then place them in an airtight container or a resealable freezer bag. They will stay fresh for up to 3 months. When you re ready to enjoy, just thaw them overnight in the fridge and, if you like, warm them up in the microwave for about 10 15 seconds!

What can I do if the marshmallows start to brown too quickly?
Good question! If you notice your marshmallows browning too quickly in the oven, you can lightly cover the brownies with aluminum foil. This will protect them while allowing the brownies to finish baking without burning the marshmallows on top. Just keep an eye on them to ensure everything bakes evenly.

Are there any allergy considerations I should be aware of?
Very! If you or your guests have allergies, be cautious with the ingredients. The brownies contain eggs, peanuts (from the peanut butter), and may have cross-contamination with gluten if you re not using gluten-free cocoa. For nut allergies, feel free to use sunflower seed butter instead of peanut butter to keep it safe for everyone.