Mix cake according to package directions, using 25% ~less~ water than the box
directs. (This is because you are converting the water quantity for microwave
cooking.) Place frosting in bottom of bundt cake pan or 3-quart casserole with
cone. Place cake mixture on top of frosting. Let stand two minutes before baking.
Microwave on High power (100%) for 10-15 minutes, until a toothpick inserted into
the cake comes out clean. Cool for 5-10 minutes and invert onto serving dish.