Preheat oven to 350℉. Line a 12 slot muffin tray with liner or spray the tray with olive oil.
In a medium mixing bowl, add in the eggs and beat well. Next add in the cheese, scallions, salt, pepper, garlic powder, onion powder and mix until combined. Outline the slots of the muffin tray with the prosciutto slices. Transfer mixture into 6 muffin slots. Bake for 20-25 minutes (or until set and golden).