Hello all! I am making the Southern Manhatten Coconut Cake from HC this evening. I am going to frost it tomorrow since it’s for my husband’s birthday. I am a little unclear as to whether I can keep this cake at room temperature once it is frosted. The buttercream is a mix of creme anglaise (sp) and Italian buttercream. Am I going to have to keep it in the fridge or can I keep it on the counter? Thanks!