Trace the bottom of the pan on some wax paper. Cut it out.
Take some Crisco shortening (or butter works fine too) and cover the bottom and sides of the pan.
Place the wax paper on the buttered bottom of the pan. Pour your batter on top of the wax paper and cook normally. When you take the cake/bread/whatever out of the oven, it pops right out and the wax paper peels right off the bottom.
No more white flour edges or cakes stuck in the pan!
Check out the recipe for this Jack and Jill Cake (shown above).