Oct 25, Typically, a cake will keep on the counter days and days in the fridge. If you're going to eat the cake in the next day or two and your house stays around 70 degrees or cooler, it should be fine to sit on the counter, says Jan–even if it is cream cheese frosting. Nov 8, Read the Cream Cheese left out of fridge! discussion from the I may not use them for an uncooked mousse, but cooked will be no problem. Reply The hens would only ever stay in the nests long enough to lay their eggs. Oct 14, According to the FDA, cream cheese can be sit out for up to two hours. However, if the temperature is above 90 degrees Fahrenheit, cream cheese can only be left out for one hour. How Long Can Cream - Can Cream Cheese Sit Out. YOU WILL NEVER EAT THIS ICE CREAM AGAIN, SICKENING RESULTS!