Ingredients:
- 1 cup flour
- 1 cup cocoa powder
- 1 teaspoon salt
- 2 1/2 cups sugar
- 1 tablespoon vanilla extract
- 1 teaspoon espresso powder (optional)
- 6 large eggs (cold)
- 1 cup vegetable oil
- 1/2 cup (1 stick) salted butter
- 6 oz dark chocolate, finely chopped
Directions:
- Preheat oven to 350 degrees. Line a 13×9 metal baking pan with foil and spray with cooking spray.
- Sift flour, cocoa powder, and salt into a mixing bowl – set aside.
- In a stand mixer, add sugar, vanilla, espresso powder, and eggs. Whip on medium-high for 7-9 minutes until fluffy and light yellow.
- Heat vegetable oil and butter in a small pan until the butter melts. Remove from heat then stir in dark chocolate until smooth.
- Reduce mixer speed to low, add melted chocolate mixture, then sifted flour mixture. Mix for one minute, then fold with a spatula.
- Pour batter into the prepared pan. Bake at 350 degrees for 30-35 minutes. Cool to room temperature, lift from the pan using the foil, and cut into squares.