The Sausage Egg McMuffin, like any other perishable food, has a limited shelf life when left at room temperature. It is generally recommended to avoid leaving perishable foods, especially those containing meat and eggs, at room temperature for an extended period.
In most cases, it is best to refrigerate the Sausage Egg McMuffin as soon as possible after it has been prepared and not consumed. Leaving it at room temperature for more than two hours increases the risk of bacterial growth, which can lead to foodborne illnesses.
If you plan to save it as a leftover, try to refrigerate it promptly. If you're unable to do so and it has been sitting at room temperature for a while, it's safer to discard it to avoid potential health risks.
To ensure food safety, always adhere to basic food handling guidelines, including promptly refrigerating leftovers and reheating them to an appropriate temperature before consumption. When in doubt about the freshness of any food item, it's better to err on the side of caution and avoid consuming it.