When cake comes out of the oven, leave in pan and begin making the glaze.
Make the glaze by heating up butter, white sugar and wine on the stove. Stir until sugar has dissolved and everything is mixed.
Pour glaze onto cake and allow to cool all while still in the bundt pan. (I saved a little of the glaze to reheat/pour over the top of the cake once cool...totally optional and you don't have to do that.)
Once cool, invert onto dish or cake plate and enjoy!