In a medium bowl, combine beaten eggs, milk, pepper, salt, and cheese.
Mix in diced vegetables, if using.
Pour mixture into a lightly greased 9x13-inch baking dish or into 6 muffin tins.
Bake for 15 to 20 minutes until cooked through.
Remove from the oven and cut egg mixture into 6 even squares.
Toast the English muffins in a toaster or on a baking sheet for 8 to 10 minutes.
Place one egg bite onto an English muffin.
Video
Notes
If freezing the egg bites: wrap each egg bite in parchment paper, place them in a freezer-grade container or freezer bag, and label it with the date frozen and the name of the food.
Reheating: unwrap the frozen egg bite, place the egg bite on a microwave-safe plate with a paper towel under it to catch the excess liquid, and reheat for about 1 minute. Place egg bite on a toasted English muffin.