Generously spray 12 muffin tins with a nonstick spray
Pour egg mixture into tin, filling each one 3/4 of the way full
Distribute cheese, ham and peppers into each spot.
Bake in a preheated 375 degree oven for 12-15 minutes.
Let cool slightly and then remove from tins. Frittatas will deflate as they cool.
Use your favorite toppings. Some other ideas include sauteed mushrooms, spinach, cooked grated potatoes, sausage. To reheat, place on a microwave safe plate and heat for 15-20 seconds until heated through.