To remove an upside down cake from the pan, first let it cool on a wire rack for 15 to 30 minutes. After cooling, run a knife or spatula between the cake and pan. Then, using a serving plate that is larger all around than the pan, place the plate upside down on top of the pan. Grasp the pan and plate with both hands and invert the whole thing (be sure to use oven mitts if the pan is still hot). Sit the plate down and carefully lift the pan leaving the inverted cake on the serving plate.