Best Heavenly Hash Brownies

You know those recipes that sneak into your heart and quietly become a family classic? Yeah—this is one of those. These Heavenly Hash Brownies are rich, gooey, nostalgic, and ridiculously easy to whip up on a weeknight or for a potluck treat that tastes like you spent hours in the kitchen (spoiler alert: you didn’t).

Honestly, I blame my chocolate cravings (and Easter candy sales) for this one. Remember those old-school Heavenly Hash eggs? Chocolate, marshmallows, almonds… basically all the best parts of the candy aisle in one bite. Well, this brownie version is my little homemade spin that captures that same magic—without needing a candy mold or a holiday excuse.

Ingredients You Probably Already Have

One of the best things about this recipe? No need for fancy ingredients or pricey baking tools. Just simple pantry staples doing big things:

For the brownie base:

  • 1 cup butter (that’s two sticks, and yes, use the real stuff)
  • 2 cups sugar
  • 4 eggs
  • 1 tsp vanilla
  • 1/2 cup unsweetened cocoa powder
  • 1 cup all-purpose flour
  • 1/4 tsp salt

For the heavenly hash topping:

  • 3 cups mini marshmallows
  • 1 cup semi-sweet chocolate chips
  • 1/2 cup chopped almonds or pecans (your call—go with what’s on hand)

For the chocolate glaze:

  • 1/4 cup butter
  • 1/4 cup cocoa powder
  • 1/4 cup milk
  • 2 cups powdered sugar
  • Splash of vanilla

Let’s Get Baking

  1. Preheat your oven to 350°F and grease a 9×13 pan. (No need for fancy parchment here—cooking spray works fine.)
  2. Melt the butter in a saucepan or microwave, then stir in sugar, eggs, and vanilla until it’s smooth and shiny.
  3. Whisk in cocoa, flour, and salt. Don’t overthink it—just mix until you don’t see dry flour anymore.
  4. Pour into pan and bake for 25–30 minutes until it looks set and a toothpick comes out with just a few fudgy crumbs.
  5. Immediately top with mini marshmallows, chocolate chips, and nuts. Pop it back in the oven for 2–3 minutes to get everything gooey.
  6. While that magic happens, whip up your glaze: melt butter, cocoa, and milk in a small saucepan. Stir in powdered sugar and vanilla until smooth.
  7. Drizzle the glaze all over the marshmallow topping. Let cool (if you can wait), slice, and devour.
Three thick, chocolatey Heavenly Hash Brownies stacked on a plate, filled with melted marshmallows, chopped nuts, and rich chocolate layers.

Tips & Swaps

  • No almonds? Use pecans, walnuts, or skip the nuts altogether if allergies are a thing.
  • Want it more chocolatey? Use dark chocolate chips or even add a few peanut butter chips to the topping.
  • Budget hack: Store brands work just fine here. No one will know. Promise.

A Brownie That Brings People Together

What I love most about these Heavenly Hash Brownies—beyond the ooey-gooey, chocolate-marshmallow combo—is how they bring people in. Whether it’s your toddler licking glaze off a spoon, your teen sneaking seconds before dinner, or your neighbor popping over “just to drop something off” (uh-huh), this is one of those recipes that turns your kitchen into the favorite spot on the block. It’s the kind of dessert that doesn’t need a holiday or a reason. Just good vibes, sweet bites, and maybe a few sticky fingers around the edges.

Final Thoughts

This is one of those treats that makes people pause after the first bite—then ask for the recipe. It’s indulgent without being complicated, nostalgic without being fussy, and budget-friendly to boot. Whether you’re baking for your kids, your coworkers, or just yourself (I see you, late-night brownie snackers), these Heavenly Hash Brownies are a keeper.

Print
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Stack of rich, fudgy Heavenly Hash Brownies with marshmallow and nut filling, served on a white plate with chocolate chunks and a glass of milk.

Best Heavenly Hash Brownies


  • Author: Alyssa
  • Total Time: 45 minutes
  • Yield: 24 brownies 1x
  • Diet: Vegetarian

Description

These Heavenly Hash Brownies are a rich, gooey, and nostalgic twist on the classic treat, inspired by old-school Heavenly Hash candy. With layers of fudgy brownie, melty marshmallows, crunchy nuts, and a smooth chocolate glaze, this easy dessert is perfect for potlucks, weeknight cravings, or anytime you need a little chocolate magic—no holiday required.


Ingredients

Scale

For the brownie base:

1 cup butter (2 sticks), melted

2 cups sugar

4 eggs

1 tsp vanilla extract

1/2 cup unsweetened cocoa powder

1 cup all-purpose flour

1/4 tsp salt

For the heavenly hash topping:

3 cups mini marshmallows

1 cup semi-sweet chocolate chips

1/2 cup chopped almonds or pecans

For the chocolate glaze:

1/4 cup butter

1/4 cup unsweetened cocoa powder

1/4 cup milk

2 cups powdered sugar

Splash of vanilla extract


Instructions

  • Preheat oven to 350°F (175°C) and grease a 9×13-inch baking pan.

  • In a large bowl, stir together melted butter, sugar, eggs, and vanilla until smooth.

  • Whisk in cocoa powder, flour, and salt until just combined.

  • Pour the batter into the prepared pan and bake for 25–30 minutes, or until a toothpick inserted comes out with a few fudgy crumbs.

  • Immediately sprinkle the warm brownies with marshmallows, chocolate chips, and chopped nuts.

  • Return the pan to the oven for 2–3 minutes, just until the toppings start to melt.

  • Meanwhile, prepare the glaze by melting butter, cocoa powder, and milk in a small saucepan over medium heat.

  • Remove from heat and stir in powdered sugar and vanilla until smooth.

  • Drizzle the glaze evenly over the marshmallow topping.

  • Let the brownies cool completely before slicing and serving.

Notes

Substitute any preferred nut or omit for a nut-free version.

For extra richness, use dark chocolate chips or add a handful of peanut butter chips.

Store-brand ingredients work great and keep this dessert budget-friendly.

Allow brownies to fully cool before slicing for cleaner cuts.

  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 brownie
  • Calories: 260 kcal
  • Sugar: 28g
  • Sodium: 80mg
  • Fat: 12g
  • Saturated Fat: 6g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 35g
  • Fiber: 1g
  • Protein: 2g
  • Cholesterol: 40mg

Keywords: heavenly hash brownies, easy chocolate dessert, nostalgic brownies, marshmallow brownies, potluck dessert, weeknight treat, gooey brownies

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