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A square of brownie on a gray plate.

100-Hour Chocolate Brownie

This batch of brownies takes 100 hours to make. Can you wait that long?
4.03 from 85 votes
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Prep Time 1 hour
Cook Time 45 minutes
Resting Time 4 days
Total Time 4 days 1 hour 45 minutes
Course Dessert
Cuisine American
Servings 24
Calories 314924 kcal

Equipment

  • hand mixer
  • 9" brownie pan
  • freezer
  • oven
  • refrigerator
US Customary - Metric

Ingredients
 
 

Browned butter

  • 1 C. butter 2 sticks
  • 1 T. espresso powder
  • 2 T. coffee ice cubes

Batter

  • 4 eggs
  • 1 T. vanilla paste You can substitute the same amount of vanilla extract.
  • 2¼ C. sugar
  • 1/2 C. cocoa powder
  • 1½ C. all-purpose flour
  • 2 tsp. Kosher salt 
  • 1 tbsp. espresso powder
  • 8 oz. 75% dark chocolate, melted Cooled to room temperature.
  • 3½ oz. milk chocolate, chopped
  • 3½ oz. 75% dark chocolate, chopped

Topping

  • 6 oz. 75% dark chocolate, chopped

Instructions
 

  • In a nonstick sauce pan, melt butter on medium/ow heat until golden. Be careful not to burn the butter.
  • Once the butter is golden, turn off the heat and add espresso powder. Add coffee ice cubes; melt completely, allowing the brown butter to cool
  • In a large bowl, add eggs, vanilla paste, and sugar; and beat with a hand mixer on medium/low speed until light and fluffy. The batter should form a ribbon.
  • Sift in cocoa powder, espresso, and salt.
  • Use a spatula to stir in the browned butter mixture.
  • Next add the melted chocolate; and sift in the flour, folding gently.
  • Add the two types of chopped chocolate.
  • Line a 9” x 13” pan with parchment paper. Add the batter into the prepared pan and top with the chopped dark chocolate shards.
  • Wrap the pan in plastic wrap and place in the refrigerator to rest for 72 hours.
  • Preheat oven to 350°.
  • Bake batter for 30 minutes.
  • Remove the brownies from the oven and wrap tightly with aluminum foil. Place in the freezer for 30 minutes.
  • Remove brownies from the freezer and refrigerate for 24 hours before serving.

Notes

https://youtu.be/DJ3t7hvHUWc

Nutrition

Calories: 314924kcalCarbohydrates: 56456gProtein: 5189gFat: 245gSaturated Fat: 95gTrans Fat: 1gCholesterol: 49mgSodium: 17330mgPotassium: 1514035mgFiber: 5gSugar: 25020gVitamin A: 294IUCalcium: 60449mgIron: 1850mg
Keyword brownies, Chocolate, dessert, fudgy
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