Preheat oven to 180 C / 350 F.
Line the 8 holes of a 12 hole muffin tin with parchment style muffin liners. Alternatively, spray generously with cooking oil. You can also use silicone cupcake molds or muffin pan. Do not use regular muffin liners.
Crack eggs into a large bowl.
Add milk, Italian seasoning, red chili flakes and vegetables.
Season with salt and pepper. Stir to combine.
Pour egg mixture into the muffin tin making sure the holes are only ¾th full.
Pour boiling water into a large baking tray. Place the muffin tin in the tray.
Carefully transfer the tray with the muffin tin to the oven.
Bake for about 25-30 minutes or until the eggs puff and are cooked to desired doneness.
Serve warm.