Gooey Marshmallow Brownie Delight Recipe

Quick Marshmallow Brownie Delight Recipe for Sweet Lovers

Chocolate lovers rejoice as this decadent marshmallow brownie delight recipe promises pure indulgence.

Rich, fudgy layers of chocolatey goodness melt together with soft, pillowy marshmallows in every irresistible bite.

The combination creates a dessert that’s simultaneously gooey and luxurious.

Each square delivers a symphony of textures that dance across your palate with delightful complexity.

Warm from the oven or cooled to perfection, these brownies offer a seriously addictive treat that’ll make dessert lovers weak at the knees.

Sweet tooths won’t be able to resist the allure of this heavenly chocolate-marshmallow creation.

Get ready to experience a dessert that turns an ordinary moment into something extraordinary.

Quick Recipe Overview

Prep Time: 15 minutes

Cook Time: 33 minutes

Total Time: 48 minutes

Calories: 210 kcal

Servings: 13

Marshmallow Brownie Ingredients in Focus

For Base:
  • Brownie Mix: A convenient shortcut that guarantees rich, decadent chocolate flavor with minimal effort, perfect for home bakers seeking quick deliciousness.
  • Eggs: Bind the mix together and add structural integrity to the brownies, ensuring a perfect texture.
  • Oil or Butter: Provides moisture and helps create that classic fudgy brownie consistency.
For Fluffy Topping:
  • Mini Marshmallows: Soft, pillowy clouds that melt beautifully, creating a gooey layer of sweetness and adding playful texture to the dessert.
For Chocolate Frosting:
  • Salted Butter: Adds depth and richness, balancing the sweetness with a subtle savory note.
  • Powdered Sugar: Creates a smooth, silky frosting base that blends seamlessly.
  • Unsweetened Cocoa Powder: Intensifies the chocolate flavor, giving the frosting a deep, authentic chocolate essence.
  • Milk: Helps achieve the perfect frosting consistency, making it spreadable and creamy.
  • Vanilla Extract: Enhances and rounds out the chocolate flavor, adding a subtle aromatic complexity.

Baking Supplies for Marshmallow Brownie

  • 9×9: Essential for creating the perfect brownie base and thickness.
  • Electric mixer or hand beaters: Crucial for whipping the frosting to a smooth, creamy consistency.
  • Large mixing bowl: Needed for combining frosting ingredients and mixing.
  • Measuring cups and spoons: Precise for accurate ingredient measurement.
  • Spatula or spreading knife: Helpful for evenly spreading frosting over marshmallows.
  • Cooling rack (optional): Useful for cooling brownies after baking.

Steps to Prepare Marshmallow Brownie

Marshmallow Brownie Delight

  • Brownie Foundation

Grab your favorite boxed brownie mix and prepare to transform it into a gooey, decadent treat. Select a baking pan that matches your desired thickness – a 9×9″ for chunky brownies or a 9×13″ for a thinner version.

  • Marshmallow Magic

Bake the brownies according to package instructions, but pull them out just before they’re completely done. Blanket the surface with fluffy mini marshmallows, creating a soft white landscape across the chocolate terrain. Pop the pan back in the oven for a quick 3-minute toast, watching the marshmallows puff and turn golden.

  • Chocolate Silk Topping

While the brownies cool, whip up a luxurious chocolate frosting. Blend softened butter with powdered sugar, rich cocoa powder, a splash of milk, and a hint of vanilla. Beat until the mixture becomes silky smooth. Once the marshmallow layer has settled, drape the frosting across the top, creating a glossy chocolate waterfall that cascades over the puffy marshmallows.

Tips for a Gooey Marshmallow Brownie

  • Cooking Tips & Variations
  • Marshmallow Melt Magic: Keep a close eye on marshmallows while baking to prevent burning. They should puff up and turn golden brown for the perfect gooey texture.
  • Brownie Base Brilliance: For extra richness, swap boxed mix with homemade brownie batter using high-quality dark chocolate and a splash of espresso.
  • Frosting Flavor Boost: Experiment with different extract flavors like mint, almond, or orange to give the chocolate frosting a unique twist.
  • Topping Transformation: Sprinkle crushed graham crackers, chopped nuts, or chocolate chips over the marshmallow layer for added crunch and flavor complexity.
  • Make-Ahead Magic: Prepare brownies a day in advance and store in an airtight container at room temperature to let flavors meld and develop deeper richness.

Serving Marshmallow Brownie with Style

  • Sweet Sidekick Pairings: Serve this decadent dessert alongside a scoop of vanilla bean ice cream for a temperature contrast that melts beautifully with the warm brownies.
  • Beverage Companions: Pair the rich marshmallow brownies with a cold glass of milk or a steaming mug of hot coffee to balance the intense chocolate flavor and cut through the sweetness.
  • Elegant Presentation: Dust the top with a light sprinkle of cocoa powder or garnish with crushed chocolate cookies for an extra layer of texture and visual appeal that will make your dessert look professionally prepared.
  • Seasonal Twist: During holiday gatherings, add festive touches like crushed peppermint candy canes or drizzle white chocolate over the top to transform this classic treat into a celebration-worthy dessert that will delight guests of all ages.

Storing Marshmallow Brownie the Right Way

  • Smart Storage Solutions
  • – Chilled Bliss: Refrigerate brownies in an airtight container for up to 5 days, keeping them moist and delectable. Wrap individual pieces in plastic wrap to maintain freshness and prevent drying.
  • – Freezer Magic: Slice brownies into portions, then stack with parchment paper between layers. Freeze for 2-3 months in a sealed freezer bag. Thaw at room temperature for 1-2 hours before enjoying.
  • – Room Temperature Charm: Store covered at room temperature for 2-3 days in a sealed container. Keep away from direct sunlight and heat sources to maintain optimal texture and flavor.
  • – Make-Ahead Magic: Prepare brownie base and frosting separately up to 2 days in advance. Assemble just before serving to ensure maximum marshmallow softness and chocolate richness.
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Gooey Marshmallow Brownie Delight Recipe

Gooey Marshmallow Brownie Delight Recipe


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4.7 from 27 reviews

  • Total Time: 48 minutes
  • Yield: 13 1x

Description

Chocolate lovers rejoice with this marshmallow brownie delight recipe that combines rich cocoa depths with gooey marshmallow swirls. Sweet squares promise indulgent comfort for dessert enthusiasts seeking pure chocolate pleasure.


Ingredients

Scale
  • 1 18-oz (510 g) box of brownie mix
  • 2 cups mini marshmallows
  • eggs (amount as specified on box)
  • oil (amount as specified on box)
  • water (amount as specified on box)
  • ¼ cup (57 g) salted butter, softened
  • 1 ½ cups powdered sugar
  • 2 tbsps unsweetened cocoa powder
  • 2 tbsps milk
  • ½ tsp vanilla extract

Instructions

  1. Prep Station: Position the oven rack centrally and preheat to 350ºF. Choose between a 9×9″ or 9×13″ pan depending on desired brownie density.
  2. Brownie Foundation: Blend brownie mix according to package instructions, then pour batter evenly into selected pan, smoothing the surface for uniform baking.
  3. Initial Baking: Bake for 30 minutes until the brownies are almost set, maintaining a slightly soft center. Watch carefully to prevent over-baking.
  4. Marshmallow Blanket: Immediately after initial baking, liberally scatter mini marshmallows across the entire surface, creating a complete white coverage.
  5. Toasting Layer: Return pan to oven for 3 minutes, allowing marshmallows to puff and turn golden brown. Remove swiftly to prevent scorching.
  6. Frosting Creation: While brownies cool, combine butter, powdered sugar, cocoa powder, milk, and vanilla extract. Whip with electric beaters until achieving a silky, smooth consistency, adjusting texture as needed.
  7. Final Assembly: Once brownies reach room temperature, generously spread chocolate frosting over the marshmallow layer, creating a luxurious, glossy finish.

Notes

  • Oven Rack Positioning: Center the rack for even heat distribution and consistent browning, ensuring perfectly baked brownies.
  • Pan Size Selection: Choose 9×9″ for denser, richer brownies or 9×13″ for lighter, thinner versions based on your texture preference.
  • Marshmallow Melting Technique: Watch closely during the 3-minute marshmallow toasting to achieve golden, puffy clouds without burning.
  • Frosting Consistency Tip: Adjust milk or powdered sugar gradually to create a smooth, spreadable chocolate frosting that complements the marshmallow layer.
  • Prep Time: 15 minutes
  • Cook Time: 33 minutes
  • Category: Desserts, Snacks
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 13
  • Calories: 210
  • Sugar: 18 g
  • Sodium: 200 mg
  • Fat: 8 g
  • Saturated Fat: 4 g
  • Unsaturated Fat: 3 g
  • Trans Fat: 0 g
  • Carbohydrates: 32 g
  • Fiber: 1 g
  • Protein: 2 g
  • Cholesterol: 25 mg
Emily Roberts

Emily Roberts

Content Creator & Kitchen Tips Specialist

Expertise

Dietary Planning​, Public Health Nutrition, Nutritional Education​, Content Development​

Education

University of Illinois at Urbana-Champaign

  • Degree: Master of Science in Nutritional Sciences
  • Focus: Research on dietary patterns and their impact on chronic diseases.​

Registered Dietitian Nutritionist (RDN)

  • Credential: Expertise in translating nutrition science into practical advice. ​

Emily Roberts is our content specialist and registered dietitian at HealthyChoices.org. With her Master’s degree in Nutritional Sciences from the University of Illinois and her Registered Dietitian Nutritionist certification, Emily uses her deep nutrition knowledge to write helpful, easy-to-understand guides about healthy eating. 

Her warm, practical advice empowers readers to confidently make healthier choices, turning everyday meals into simple moments of wellness and joy.

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