Melt the butter in a skillet then proceed to add the granulated sugar, brown sugar, vanilla extract, lemon zest, cinnamon and nutmeg. Stir occasionally until the sugar dissolves and becomes brown. Then add the apples and stir well. Cook until the apples have released most of their juice. Move the apples over to a pie plate. Then continue to simmer the juice for 2-4 minutes until it has thickened and looks like light caramel. Then pour it on top of the apple mix.