Preheat the oven to 400 degree F. Prepare a muffin tin by spraying it with cooking oil.
Whisk eggs and add in shredded cheese and cubed bread. Mix until the bread is covered in egg.
Fill the wells of a muffin tray halfway with the diced vegetables, then fill the rest of the way up with the egg mixture. Bake at 400 F for 15 minutes or until cooked through. Serve warm.
Notes
Spray the pan WELL before pouring the eggs into the muffin wells.
Store for up to 3 days in the refrigerator or freeze for up to 3 months. To reheat, wrap in a paper towel and microwave for 30 seconds or until heated. Reheating from frozen may take up to 1 minute or more.