I am making my first tiered wedding cake. I am trying to come up with some yummy fillings. The wedding cake will be sitting out for a while so I need recipes that don't include refrigerating the cake once it has been filled. Any help is appreciated! Thanks so much!

I've been mixing jam with buttercream and it is yummy. Also ganache does not have to be in the fridge. You can also purchase several different flavors of sleeve fillings (fruit and other flavors) that are shelf stable.