There are definitely more than three, but the top three that come to mind for me are buttercream, fruit compote, (like this blueberry cake filling), and mousse-like fillings -- chocolate mousse ...

Chocolate cake is plenty tasty on its own, but you can add a fruity twist by bringing in this classic condiment. Trust us, ...

Filling: Drain cherries, saving 1 1/2 cups of the liquid. In a saucepan, mix sugar and cornstarch. Cook until thick, add almond extract, lemon juice and orange peel.

Preheat your oven to 350 degrees. Prepare two eight-inch cake pans by greasing them and lining the bottoms with parchment paper; set them aside.