For the Chocolate Sheet Cake
- 1 cup water
- 1 cup (227 grams) unsalted butter
- 1/4 cup (22 grams) cocoa powder, natural unsweetened
- 2 cups (255 grams) all-purpose flour
- 2 cups (398 grams) granulated sugar
- 1 teaspoon baking soda
- 3/4 teaspoon fine sea salt
- 1/2 cup (112 grams) buttermilk
- 2 large eggs
- 1 1/2 teaspoons pure vanilla extract
For the Chocolate Icing
- 6 tablespoons (85 grams) milk
- 1/4 cup (22 grams) cocoa powder, natural unsweetened
- 1/2 cup (113 grams) unsalted butter
- Dash fine sea salt
- 1/2 teaspoon vanilla extract
- 3 1/2 cups (440 grams) powdered sugar
- 1 cup chopped walnuts or pecans