Preheat oven to 350 degrees F.
Crack eggs into a large bowl. Add milk, salt and pepper and whisk it together until the liquid is combined.
Note: you can use any type of egg here, whether that be whole eggs, a vegan egg substitute or egg whites!
Pour the eggs into a 13x9 nonstick baking sheet.
Add spinach on top and bake for 12-15 minutes or until eggs are firm.
When the eggs are firm, remove the baking sheet from the oven. Cut into 12 squares.
Split english muffin into 2, top with 2 egg patties and a slice of cheese.
Arrange the egg muffin sandwiches on a baking sheet. Pop them back in the oven to warm them up, approximately 10 minutes.
Note: you can do this in a big batch if you’re serving a group, or you can heat up a single sandwich for yourself.
Remove from the oven when the cheese is melty. Enjoy!!