Ingredients Cake: 2 cups all-purpose flour 2 cups white sugar 1 teaspoon baking soda ½ teaspoon salt
½ cup sour cream 2 eggs 1 cup butter 1 cup water 5 tablespoons unsweetened cocoa powder
Icing: 6 tablespoons milk 5 tablespoons unsweetened cocoa powder ½ cup butter 4 cups confectioners' sugar 1 teaspoon vanilla extract
On low, melt butter in a saucepan. Stir in chocolate powder and water. Boil ingredients, then remove from heat. After cooling, incorporate chocolate mixture into flour and egg mixture. Pour batter into pan.
Bake for 20 minutes in the preheated oven until a toothpick inserted into the center comes out clean.
While cake bakes, create icing: Add milk, cocoa powder, and butter to a large saucepan over medium heat. After boiling, remove from heat. Mix confectioners' sugar, vanilla, and walnuts until mixed.