In each muffin slot, add cheese, tomatoes, bacon, and onion. Use a 1/4 measuring cup, pour egg mixture over each slot leaving a little space at the top.
Bake for 20 minutes. Check to see if the middle of each egg bite is done.If not fully cooked return to the oven for about 3 minutes more.
Let egg bites cool completely before storing.
Notes
The ingredients for these egg bites can be whatever you love to eat. Sausage, different cheeses, spinach, kale, etc,