Lining cake pans with parchment paper guarantees that your layers will release without any problems. It is possible to buy parchment rounds from specialty shops, but one doesn't always have them on hand. Simply cut a piece of parchment paper that's roughly the same diameter as your round cake pan. Follow these steps and you'll see how easy it really is.
This layer pan is 9" in diameter.
Fold the parchment in half, lengthwise.
Fold the closed sides in half.
Fold the closed sides in half again two more times.
You should end up with a triangular piece of parchment
Turn your cake pan upside down. Take the tip of your
parchment paper and place it right in the middle
of your pan. Trim the overhanging piece of parchment.
Voila! Unfold your parchment & you have a
perfect round with which to line your pan.
This is such a simple trick that all bakers should know how to do. Now you can line your cake pan and bake away.