Preheat the oven to 325°F
Grease a muffin tin or silicone egg bite mold
Crack eggs into a bowl
Add milk or cream
Add salt and pepper
Whisk until smooth
Stir in shredded cheese
Add cooked fillings like bacon, ham, spinach, or vegetables
Pour the mixture into the cups
Fill each cup about three-quarters full
Place the muffin tin in a larger baking dish
Add hot water to the larger dish for a water bath
Bake for 20 to 25 minutes
Check that the centers are set
Let cool for a few minutes
Remove from the mold or tin
Serve warm