Texas Turtle Sheet Cake Recipe - In a saucepan, combine 1 cup of butter, 1 cup of coffee and 1/3 cup of cocoa. 2 1/2 cups powdered sugar. Grease and flour the pan or use parchment paper. Pour into prepared dry ingredients. Preheat the oven to 350 degrees. 1/3 cup unsweetened cocoa powder. Bring to a boil, stirring constantly. 1 cup strong black coffee. In a large bowl, mix the baking flour and granulated sugar.
1/3 cup unsweetened cocoa powder. Pour into prepared dry ingredients. 2 1/2 cups powdered sugar. In a large bowl, mix the baking flour and granulated sugar. Bring to a boil, stirring constantly. Preheat the oven to 350 degrees. In a saucepan, combine 1 cup of butter, 1 cup of coffee and 1/3 cup of cocoa. Grease and flour the pan or use parchment paper. 1 cup strong black coffee.