Prepare the ingredients: cook the bacon and crumble it. Chop the onions, shred the cheese and preheat the oven to 375 degrees f.
Whisk the eggs in a small mixing bowl with the milk and add the chopped onions.
Arrange the mini phyllo cups on a baking sheet, add the bacon crumbles and shredded cheese to each of the cups.
Pour the egg mixture over the top of the bacon and cheese and place in a preheated oven and bake until golden brown; about 20 minutes
Notes
These can be made a day or two ahead of time and reheated just before serving. Store leftovers in the refrigerator for up to four days.Serve as an appetizer, light lunch or dinner.