But, First: Do I Need to Refrigerate My Cake? Most of the time, the answer is no. Most cakes, frosted and unfrosted, cut and uncut, are perfectly fine at room temperature for several days. ... For frosted cakes, chill the cake uncovered for 15 minutes to harden the icing, then wrap it in plastic wrap.

How long can cake sit out unrefrigerated?

An uncut frosted cake that's been frosted with buttercream, fondant, or ganache can last at room temperature for up to five days. Keep it covered with a cake keeper or a bowl to protect it from dust or other particles. If your cake has already been cut into, that means moisture is already beginning to escape.

Does refrigerating cake dry it out?

Refrigeration dries sponge cakes out. It's that simple. Even if you refrigerate a cake in a perfectly sealed container and only for a short amount of time, it will dry out. ... So don't put your cake in the fridge either!