Vegetable: any combination of tomatoes, mushroom, zucchini, broccoli, etc
Cheese: any combination of mozzarella, feta, parmesan, cheddar, etc.
Heat oven to 350f
Spray or brush oil a muffin baking pan
Cut all vegetables to small cubes, mix with shredded or cut cheeses
Fill the muffin tin to the top.
Mix eggs with salt and pepper and pour over the vegetables to the top
note: you may add some heavy cream to the eggs, mix well.