This dip should not sit out at room temperature for more than 2 hours for food safety reasons. If you have a leftover dip after two hours, cover well with plastic wrap or place it into an airtight container and stick it in the fridge for later. You may also be able to keep it in a small crockpot or warming dish so that it holds at a safe temperature and is within reach if you want it to be safely out of the fridge for more than 2 hours.