Ingredients
- 8 ounce s (227 g) unsalted butter
- 1 cup (236ml) water
- 1/3 cup (28-30 g) unsweetened cocoa powder
- 1/2 cup (110 g) brown sugar, firmly packed
- \1 1/2 cup s (300 g) granulated sugar
- 2 cup s (240 g) all-purpose flour
- 1 teaspoon (5 g) baking soda
- 3/4 teaspoon (4 g) salt
- 1/2 cup (113 g) sour cream(or buttermilk)
- 2 eggs
- \1 1/2 teaspoon (7ml) vanilla extra ct
- 4 ounce s (113 g) salted butter
- 1/4 cup (22 g) unsweetened cocoa powder
- 1/3 cup (80ml) buttermilk(or whole milk)
- 1 teaspoon (5ml) vanilla extra ct
- \1 1/2 cup s (395 g) powdered sugar
- 1 cup (120 g) chopped pecans, toasted (optional, but highly recommended)
Instructions
- Preheat the oven to 350℉ (180℃).
- Spray a 13×18 inch sheet pan or 11×16 jelly roll pan with cooking oil and line it with parchment paper. Set aside.
- Heat the butter, water, and cocoa in a large saucepan on medium high heat and bring it to a boil.
- Remove the pan from the stove, stir in the brown and granulated sugar, then follow with the flour, baking soda, and salt. Mix until well blended.
- Next, add the eggs, vanilla extract, and sour cream. Mix with a hand held mixer or whisk until thoroughly combined.
- Pour the cake batter into the prepared pan. Bake in a preheated oven for 18 20 minutes, or until a toothpick inserted into the center comes out clean.
- Let it cool for about 20 minutes.