the butter cream that is made with all Crisco can stay on the counter at reasonable room temp for as long as a week but I don鈥檛 like doing that. The BC that is made with butter and Crisco can stay on the counter for a few days if the room is not to warm. (It doesn鈥檛 go bad but the ingredients break apart and you can get a lousy consistency BC.) The cooked BC in my opinion, should stay in the refrigerator until a couple of hours before covering the cake. Allow to come to room temp and then decorateHow long can a butter cream icing be unrefrigerated without spoiling?
unrfrigerated not very long but in the fridge: