Use a pastry brush to grease the Bundt® pan thoroughly with solid shortening. Sprinkle some flour in the pan, hold it over a sink, and turn and tilt the pan to distribute the flour evenly. Then invert the pan and tap out the excess flour to prevent a buildup of grease and flour on the finished cake. When greasing and flouring, be sure to coat all the crevices in the pan so the cake will release easily and the design will be sharply defined.
This recipe courtesy of Williams-Sonoma.