The general rule is that food has a two-hour window in which it can be left out and put back into refrigeration. Once a product has passed the two-hour mark, it must be used. Allowing the eggs, butter, and cream cheese to come to room temperature is a food safety nightmare, but the idea is that the food will be further cooked. Therefore, leaving your eggs and dairy at room temperature for an hour so that they are more pliable is safe.