The best way to ensure your cake comes out of the mold easily to butter and flour the pan thoroughly before you bake. The easiest way to get your Bundt cake out cleanly is to let it cool a few minutes first. You'll notice that as it cools, the cake will pull away from the edges of the Bundt mold. Then, place a cooling rack over the pan and hold it firmly in place as you flip it over. Let gravity help you - the cake will slide right out, then lift the cake pan straight up to avoid hitting the sides.