Disappearing Marshmallow Brownies: A Sweet Memory

I remember my Girl Scout troop baking these “Disappearing Marshmallow Brownies” for a bake sale. They earned their name honestly; not only did the marshmallows seemingly vanish into the gooey depths, but the entire pan would disappear within minutes of being placed on the table! The aroma alone – a heady mix of butterscotch, chocolate, and toasted marshmallow – was enough to draw a crowd. These aren’t just brownies; they’re miniature portals back to simpler, sweeter times.

Recipe Overview

• Prep Time: 15 minutes
• Cook Time: 20-25 minutes
• Total Time: 35-40 minutes
• Yields: 30 bars
• Dietary Type: Not Gluten-Free

Ingredients

• 3/4 cup flour
• 1 teaspoon baking powder
• 3/4 teaspoon salt
• 3/4 cup butterscotch chips
• 1/4 cup butter
• 1/3 cup brown sugar
• 1 large egg
• 1/2 teaspoon vanilla
• 1 cup miniature marshmallows
• 1 cup semi-sweet chocolate chips
• 1/4 cup walnuts, chopped (optional, can substitute pecans or omit)

Equipment Needed

• 9×13 inch baking pan
• Large mixing bowl
• Small mixing bowl
• Double boiler (or a heatproof bowl and saucepan)
• Sifter
• Electric mixer (optional, can mix by hand)

Instructions

1. Position a rack in the middle of the oven and preheat to 350°F (175°C).
2. In a large mixing bowl, sift together the flour, salt, and baking powder. This ensures even distribution of the leavening agent and prevents lumps.
3. Butter a 9×13 inch baking pan thoroughly. This prevents the brownies from sticking and allows for easy removal.
4. Set up a double boiler over low heat. If you don’t have a double boiler, you can use a heatproof bowl set over a saucepan of simmering water, ensuring the bottom of the bowl doesn’t touch the water.
5. In a small mixing bowl, beat the egg until frothy. This incorporates air and helps create a lighter brownie texture.
6. If you’re using walnuts, chop them into small pieces.
7. In the double boiler, melt the butter and butterscotch chips over low heat, stirring frequently until smooth. Be careful not to overheat the mixture, as this can cause the butterscotch to seize.
8. Remove the butterscotch mixture from the heat and let it cool slightly. This prevents the egg from cooking when added in the next step.
9. In a large mixing bowl, beat together the egg, vanilla, and brown sugar until fluffy. This creates a base for the brownies and incorporates air for a better texture.
10. Gently fold in the melted butter and butterscotch chips into the egg mixture. Stir until smooth and well combined.
11. Gradually add the dry ingredients (flour, salt, baking powder) to the wet ingredients in thirds, blending until just combined after each addition. Overmixing can develop the gluten in the flour, resulting in tough brownies.
12. Fold in the miniature marshmallows, chocolate chips, and chopped walnuts (if using). Distribute them evenly throughout the batter.
13. Scoop the brownie batter into the prepared 9×13 inch pan and spread evenly.
14. Bake at 350°F (175°C) for 20-25 minutes. DO NOT OVERBAKE! Overbaking will result in dry, crumbly brownies. The brownies are done when a toothpick inserted into the center comes out with moist crumbs attached. The marshmallows on top may be lightly toasted.
15. Let the brownies cool completely in the pan before cutting and serving. This allows them to set properly and makes them easier to cut. Cooling on a wire rack will prevent the bottom from becoming soggy. Cut into approximately 2-inch bars (5 rows x 6 columns).

Expert Tips & Tricks

• For extra fudgy brownies, reduce the baking time by a minute or two.
• To prevent sticking, line the baking pan with parchment paper, leaving an overhang on the sides to lift the brownies out easily.
• If you don’t have butterscotch chips, you can substitute equal amounts of white chocolate chips or peanut butter chips.
• For a richer flavor, use dark brown sugar instead of light brown sugar.
• Toasting the walnuts before adding them to the batter enhances their flavor. Toast them in a dry skillet over medium heat for a few minutes, or in the oven at 350°F (175°C) for 5-7 minutes, until fragrant.
• To get clean cuts, use a plastic knife or a metal knife that has been warmed under hot water and wiped dry.
• Don’t be afraid to experiment! Add a dash of espresso powder to the batter for a mocha flavor or sprinkle some sea salt on top after baking to balance the sweetness.

Serving & Storage Suggestions

Serve these disappearing marshmallow brownies at room temperature. They’re perfect as an afternoon treat, a party dessert, or a bake sale item. They pair well with a cold glass of milk, a scoop of vanilla ice cream, or a hot cup of coffee.

To store, keep the brownies in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to a week. For longer storage, freeze the brownies for up to 2 months. Thaw them in the refrigerator overnight before serving. To reheat, warm them gently in the microwave for a few seconds or in a preheated oven at 300°F (150°C) for a few minutes.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	98.3 kcal	N/A
Calories from Fat	47 kcal	48%
Total Fat	5.3 g	8%
Saturated Fat	3.1 g	15%
Cholesterol	10.3 mg	3%
Sodium	92.6 mg	3%
Total Carbohydrate	12.8 g	4%
Dietary Fiber	0.5 g	1%
Sugars	9.3 g	N/A
Protein	1.1 g	2%

Note: Nutritional information is an estimate and may vary based on specific ingredients and portion sizes.

Variations & Substitutions

• Nut-Free: Omit the walnuts altogether or substitute with sunflower seeds or pumpkin seeds for a similar texture.
• Extra Chocolatey: Add 1/4 cup of cocoa powder to the dry ingredients for a deeper chocolate flavor.
• Peanut Butter Lovers: Swirl a few tablespoons of peanut butter into the batter before baking.
• Salted Caramel: Add salted caramel chips instead of butterscotch for a salty-sweet experience. Drizzle melted caramel on top for extra flair.
• Spiced Brownies: Add 1/2 teaspoon of cinnamon or pumpkin pie spice to the dry ingredients for a warm, comforting flavor.

FAQs (Frequently Asked Questions)

Q: Why are they called “Disappearing Marshmallow Brownies?”
A: The marshmallows melt into the brownie batter during baking, creating a gooey texture and seemingly disappearing, hence the name. Plus, they tend to disappear quickly once served!

Q: Can I use large marshmallows instead of miniature ones?
A: While you can, miniature marshmallows are preferred because they distribute more evenly throughout the batter and melt more uniformly. If using large marshmallows, chop them into smaller pieces first.

Q: How do I prevent the brownies from sticking to the pan?
A: Make sure to butter the pan thoroughly or line it with parchment paper, leaving an overhang for easy removal.

Q: What if I don’t have a double boiler?
A: You can easily create a makeshift double boiler by placing a heatproof bowl over a saucepan of simmering water, ensuring the bottom of the bowl doesn’t touch the water.

Q: Can I add more chocolate chips?
A: Absolutely! Feel free to add more chocolate chips, or even a combination of different types, to your liking.

Final Thoughts

These Disappearing Marshmallow Brownies are a guaranteed crowd-pleaser, bringing joy to both the baker and the lucky ones who get to enjoy them. Don’t be surprised if they vanish before your eyes! I encourage you to try this recipe and make it your own with your favorite add-ins. Share your creations and feedback – I’d love to hear how they turn out. Consider serving them with a scoop of homemade ice cream or a rich cup of hot chocolate for an extra indulgent treat. Happy baking!