Heavenly hash brownies are a rich, indulgent dessert that combines classic chocolate brownies with marshmallows, chocolate chips, and nuts for a gooey, crunchy, and irresistibly sweet treat. Perfect for parties, holidays, or simply satisfying a chocolate craving, this dessert is a crowd-pleaser known for its texture and flavor.
This article provides a detailed, easy-to-follow recipe for making heavenly hash brownies from scratch. It includes preparation tips, substitution options, and storage advice, making it suitable for bakers of all skill levels.
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ToggleWhat Are Heavenly Hash Brownies?
Heavenly hash brownies are a variation of traditional chocolate brownies enriched with additional ingredients such as mini marshmallows, chocolate chips, and chopped nuts (typically walnuts or pecans). This combination is inspired by “heavenly hash,” a term that originally referred to a type of ice cream or candy featuring a similar blend of flavors and textures.
The defining characteristics of heavenly hash brownies are:
- Moist, fudgy brownie base
- Sweet, slightly melted marshmallows
- Chunks of semi-sweet or dark chocolate
- Crunchy nuts for added texture
These brownies offer a perfect balance of chewiness, gooeyness, and crunch, making them ideal for dessert lovers.
Ingredients for Heavenly Hash Brownies
To create heavenly hash brownies that are both delicious and easy to prepare, the following ingredients are recommended. These quantities yield approximately 16 brownies.
For the Brownie Base:
- 1 cup (2 sticks) unsalted butter
- 1 ½ cups granulated sugar
- ¾ cup unsweetened cocoa powder
- 1 teaspoon vanilla extract
- ½ teaspoon salt
- 2 large eggs
- 1 cup all-purpose flour
For the Topping:
- 1 ½ cups mini marshmallows
- 1 cup semi-sweet chocolate chips
- ½ cup chopped walnuts or pecans (optional)

Step-by-Step Preparation
Step 1: Preheat the Oven
Preheat the oven to 350°F (175°C). Line an 8×8-inch or 9×9-inch baking pan with parchment paper or lightly grease it to prevent sticking.
Step 2: Prepare the Brownie Batter
- In a medium saucepan, melt the butter over low heat.
- Remove the saucepan from heat and stir in the sugar and cocoa powder until well combined.
- Add the vanilla extract and salt. Let the mixture cool slightly before adding the eggs.
- Beat in the eggs one at a time until the batter is smooth.
- Gently fold in the flour until just combined. Avoid overmixing, as this can affect the texture of the brownies.
Step 3: Bake the Brownie Base
Pour the brownie batter into the prepared baking pan and smooth the top with a spatula. Bake for 20–25 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
Step 4: Add the Topping
Remove the brownies from the oven and immediately sprinkle the mini marshmallows, chocolate chips, and chopped nuts evenly over the top. Return the pan to the oven and bake for an additional 5–7 minutes, or until the marshmallows are puffed and slightly golden.
Step 5: Cool and Cut
Allow the brownies to cool completely in the pan before slicing. For clean edges, chill the brownies in the refrigerator for 30 minutes before cutting into squares.
Tips for Perfect Heavenly Hash Brownies
- Don’t overbake: Overbaking can dry out the brownie base. Remove the brownies from the oven once the center is just set.
- Use high-quality chocolate: Opt for premium chocolate chips or chunks for a richer flavor.
- Customize the mix-ins: Swap nuts for coconut flakes, or use white chocolate chips for a twist.
- Cool before slicing: Letting the brownies cool completely helps the topping set and makes slicing easier.
Storage and Serving Suggestions
Storage:
- Store in an airtight container at room temperature for up to 3 days.
- Refrigerate for up to a week to extend freshness.
- For long-term storage, wrap individual brownie squares in plastic wrap and freeze for up to 2 months.
Serving Ideas:
- Serve warm with a scoop of vanilla ice cream.
- Dust with powdered sugar for a festive presentation.
- Pack as a treat for lunchboxes, potlucks, or bake sales.
Nutritional Information (Approximate Per Serving)
Nutrient | Amount (per serving) |
---|---|
Calories | 260 |
Total Fat | 14g |
Saturated Fat | 8g |
Carbohydrates | 34g |
Sugars | 24g |
Protein | 3g |
Conclusion
Heavenly hash brownies are a rich and satisfying dessert that brings together a variety of textures and flavors in each bite. With the right balance of ingredients and careful baking, they are simple to make and universally appealing. Whether for a special celebration or an everyday indulgence, this dessert continues to be a favorite among both kids and adults.
This recipe is a versatile, family-friendly option that can be adapted to suit various dietary needs while still delivering the classic heavenly hash experience.
Frequently Asked Questions
Can heavenly hash brownies be made gluten-free?
Yes, substitute the all-purpose flour with a 1:1 gluten-free baking flour blend. Ensure other ingredients (especially marshmallows and chocolate chips) are certified gluten-free.
Can different nuts be used?
Absolutely. Pecans, almonds, or even hazelnuts can be used depending on taste preference or dietary requirements.
Are these brownies suitable for vegetarians?
Most ingredients are vegetarian-friendly. However, check that the marshmallows are made without gelatin or use vegan marshmallows if needed.