When baking cakes, especially layered ones, my greatest fear is that the cakes won't come out of the pans easily even if I've greased the living daylights out of them. The solution is simple: place a sheet of parchment paper on the bottom of the cake pan. The cake will easily slide out every time.
While you can buy parchment paper already pre-cut into rounds, they're expensive and you'd need to buy more than one type of round if you have cake pans in multiple sizes. Here's an easy way to make your own parchment rounds out of a regular roll of parchment paper in just a few quick steps!