Paula Dean's chocolate gravy recipe - delicious! 1/3 stick butter 2/3 cup sugar 2 tablespoons all-purpose flour 1/3 cup cocoa 2 cups whole milk Heat butter in a cast iron skillet over low heat. Mix in sugar, flour and cocoa. Slowly pour 1 cup of milk into the skillet and whisk well to remove lumps. Whisk in remaining milk, stirring constantly, until mixture is thick, being careful not to scorch. Serve hot over biscuits.