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a stack of two black cocoa brownie with walnuts showing inside the gooey brownies

Black Cocoa Brownies with Walnuts (One Bowl)

Amber Bondar
These homemade black cocoa brownies with walnuts have an almost-black colour, a rich chocolate-cake-like flavour, and moist, fudgy centres. Made with black cocoa powder, four eggs, and oil instead of butter, the batter comes together in one bowl and makes a full 9×13-inch pan.
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Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Dessert
Cuisine American, Canadian
Servings 16 Servings
Calories 305 kcal

Equipment

  • Large Mixing Bowl
  • Mixing spoon or spatula
  • Teaspoon
  • measuring cup
  • 9×13-inch baking pan

Ingredients
  

  • 1½ Cups All-Purpose Flour
  • 2 Cups Granulated White Sugar
  • ½ Cup Black Cocoa Powder
  • 1 Teaspoon Salt
  • 1 Cup Neutral Oil Plus Extra for Greasing the Pan
  • 2 Teaspoons Vanilla Extract
  • 4 Eggs
  • ¼ Cup Cold Water
  • ½ Cup Chopped Walnuts

Instructions
 

  • Preheat the oven to 350°F (175°C).
  • Lightly oil the bottom and sides of a 9×13-inch baking pan.
  • Add the all-purpose flour to a large mixing bowl.
  • Add the granulated white sugar.
  • Add the black cocoa powder.
  • Add the salt.
  • Pour in the neutral oil.
  • Add the vanilla extract.
  • Add the four eggs.
  • Begin mixing the ingredients together.
  • Scrape the bottom and sides of the bowl to incorporate the dry ingredients.
  • Gradually pour in the cold water while continuing to mix.
  • Blend until the brownie batter is thick and smooth, with no visible pockets of dry ingredients.
    • Mixing: Scrape the bottom and sides of the mixing bowl to make sure the flour and cocoa powder are fully incorporated.
  • Add the chopped walnuts.
  • Fold the walnuts evenly through the brownie batter.
  • Transfer the batter to the prepared baking pan.
  • Spread the batter evenly into the corners.
  • Bake in the preheated oven at 350°F (175°C) for 30 minutes.
  • Remove the brownies from the oven.
  • These brownies have very fudgy centres. Allow them to cool completely in the pan before attempting to cut or remove them.
  • Loosen the edges of the cooled brownies if necessary.
  • Cut into 16 squares.

Nutrition

Calories: 305kcalCarbohydrates: 36gProtein: 4gFat: 17gSaturated Fat: 3gPolyunsaturated Fat: 3gMonounsaturated Fat: 11gTrans Fat: 0.004gCholesterol: 41mgSodium: 163mgPotassium: 86mgFiber: 2gSugar: 25gVitamin A: 60IUVitamin C: 0.05mgCalcium: 16mgIron: 1mg
Keyword 9x13 brownies, black cocoa brownies, black cocoa brownies with walnuts, black cocoa powder brownies, brownies with walnuts, fudgy brownies, homemade brownies, one bowl brownies, walnut brownies
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