Chocolate Pecan Layer Cake - Paula Deen

Ingredients

• 1 cup unsweetened cocoa powder
• 1 1/2 cups Boiling water
• 3 cups sifted cake flour
• 1 1/4 teaspoons baking soda
• 1 teaspoon salt
• 1/2 pound (2 sticks) softened softened butter
• 3 1/3 cups divided packed light brown sugar
• 3 eggs
• 3 3/4 teaspoons vanilla extract
• 2 1/2 tablespoons milk
• 16 tablespoons (2 sticks) divided Butter
• 2/3 cup packed dark brown sugar
• 1/4 cup plus more, if necessary heavy cream
• 2 1/2 cups confectioner's sugar
• 1 cup chopped pecans for garnish