These Cobweb Brownies are so easy, incredibly fudgy and delicious. Thick homemade black cocoa brownies are topped with threads of stretched melted marshmallow for fun and spooky treat. This recipe will yield 16 brownies.

Cobweb Brownies

Looking for a super simple yet fun Halloween dessert?

Look no further than these cobweb brownies! A super simple homemade black cocoa brownie is topped with melted and stretch marshmallow giving the illusion of cobwebs. The flavor of the brownies is rich and chocolaty and reminiscent to the flavor of Oreos. Paired with the marshmallow, sends these decadent brownies over the top.

Cobweb Brownies

WHAT IS BLACK COCOA POWDER?

Black cocoa has a distinct and mild chocolate flavor and is processed in a way that makes it darker in color. It is lower in acidity, which allows its distinct flavor to shine. Love Oreos? That’s probably because of the black cocoa powder (and the cream filled middle!).

ingredients for Cobweb Brownies

To Make These Cobweb Brownies You Will Need:

  • nonstick baking spray with flourFor greasing the pan.
  • unsalted butterAdds moisture, richness and flavor.
  • 60% cacao bittersweet chocolateLends rich, deep and balanced chocolate flavor.
  • granulated white sugarFor sweetening and flavor.
  • dark brown sugarAlso lends sweetness, subtle caramel-like flavor and gives the brownies a fudgy texture.
  • pure vanilla extractAdds warmth and enhances all of the other flavors in this recipe.
  • eggsActs as a binding agent, helps the brownies rise and adds rich flavor.
  • unbleached all-purpose flourAdds structure and is the base of the brownie batter.
  • black cocoa powderGives these brownies that dark black color and Oreo-like flavor.
  • fine saltEnhances the flavor of the brownies.
  • marshmallowsI like to use mini but any will work.

prepare pan and preheat oven

Preheat  your oven to 350°F (or 180°C).

Line a 9×9 metal baking pan with parchment and spray side and bottom of the pan with a nonstick baking spray with flour.

add butter and chocolate to sauce pan

Make The Brownies:

In a 3-quart sauce pan, add 1 cup unsalted butter and 8 ounces of chopped 60% bittersweet chocolate baking bar.

heat on low, stirring until melted

Heat over low, stirring until melted. Remove off of the heat and let cool for a few minutes.

whisk flour, black cocoa and salt

Meanwhile, in a medium bowl, measure and add in 2/3 cup unbleached all purpose flour, 1/3 cup black cocoa powder and 1/2 teaspoon fine salt. Whisk to combine and set off to the side.

remove off heat and add in sugars

To the semi-cooled chocolate, add in 1 cup granulated white sugar and 3/4 cup dark brown sugar.

stir to combine

Stir until just mixed through a bit.

add in vanilla

Add in 1 tablespoon pure vanilla extract.

whisk comoletely

Switch over to a whisk, and whisk until thoroughly combined.

add in one egg at a time

Next add in the 5 whole eggs, one at a time.

whisk until thickened

Whisking well after each egg.

add in coco/flour mixture

Lastly, add in the black cocoa/flour mixture.

whisk until incorporated

Whisk until incorporated.

use a spatula to scrape sides and bottom of pan

Switch back to a spatula and scrape the sides and bottom of the pan.

pour brownie batter into prepared pan

Pour the brownie batter into your prepared pan.

spread out evenly

Spread the batter out evenly.

let brownies cool completely

Bake on the middle rack for 35 to 40 minutes OR until desired doneness. I bake mine for 40 minutes. Remove and let cool for 15 minutes before using the parchment paper to lift the brownies out of the pan and transfer to a wire rack to cool completely.

marshmallows in microwave safe bowl

Make the Marshmallow “Cobwebs”:

Once the brownies are completely cooled. Add 1 cup of mini marshmallows to a microwave-safe dish.

melted marshmallows

Microwave for 15 to 20 seconds or until melted. Be sure to test the marshmallows to make sure it isn’t too hot .

Cobweb Brownies

Using both hands, grab some of the warm melted marshmallow and stretch it out, draping the strings or “webs” over the top of the brownies.

Cobweb Brownies

There’s  really no way to screw this up.

Cobweb Brownies

Slice and serve!

Cobweb Brownies

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Cobweb Brownies

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Cobweb Brownies

Cobweb Brownies
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Yield: 16 servings

Cobweb Brownies

These Cobweb Brownies are so easy, incredibly fudgy and delicious. Thick homemade black cocoa brownies are topped with threads of stretched melted marshmallow for fun and spooky treat.

Ingredients

  • nonstick baking spray with flour

FOR THE BROWNIES:

  • 1 cup unsalted butter
  • 8 ounces 60% cacao bittersweet chocolate baking bar, I use Ghirardelli
  • 2/3 cup unbleached all-purpose flour
  • 1/3 cup dutch black cocoa
  • 1/2 teaspoon fine salt
  • 1 cup granulated white sugar
  • 3/4 cup dark brown sugar
  • 1 tablespoon vanilla extract
  • 5 large eggs, at room temperature
  • 1 cup miniature marshmallows

Instructions 

  • Preheat  your oven to 350°F (or 180°C).
    Line a 9×9 metal baking pan with parchment and spray side and bottom of the pan with a nonstick baking spray with flour.
  • In a 3-quart sauce pan, add unsalted butter and chopped bittersweet chocolate. Heat over low, stirring until melted. Remove off of the heat and let cool for a few minutes.
  • Meanwhile, in a medium bowl, measure and add in the flour, black cocoa powder and fine salt. Whisk to combine and set off to the side.
  • To the semi-cooled chocolate, add in both sugars, stir until just mixed through a bit. Add in vanilla extract, switch over to a whisk, and whisk until thoroughly combined.
  • Next add in the eggs, one at a time. Whisking well after each egg.
  • Lastly, add in the black cocoa/flour mixture and whisk until incorporated. Switch back to a spatula and scrape the sides and bottom of the pan.
  • Pour the brownie batter into your prepared pan and spread the batter out evenly. Bake on the middle rack for 35 to 40 minutes OR until desired doneness. I bake mine for 40 minutes. Remove and let cool completely.
  • Once the brownies are cooled. Add the mini marshmallows to a microwave-safe dish. Microwave for 15 to 20 seconds or until melted. Test the marshmallows to make sure it isn't too warm and then using both hands, grab some of the warm melted marshmallow and stretch it out, draping the strings or “webs” over the top of the brownies.
  • Let sit for 15 mintues before slicing and serving.

Notes

Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. I am not a certified nutritionist and any nutritional information shared on SimplyScratch.com should only be used as a general guideline.
Serving: 1brownie, Calories: 323kcal, Carbohydrates: 38g, Protein: 4g, Fat: 18g, Saturated Fat: 12g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 4g, Trans Fat: 0.5g, Cholesterol: 89mg, Sodium: 118mg, Potassium: 163mg, Fiber: 1g, Sugar: 29g, Vitamin A: 440IU, Vitamin C: 0.1mg, Calcium: 67mg, Iron: 1mg