Preheat oven to 220°C / 200°C fan / Gas 7
Grease each cup (base and sides) of a muffin tin with the spray oil or melted butter.
In a jug, whisk together the egg, milk, dried herbs, and cheese. Season with salt and pepper.
Divide the chopped chicken and broccoli between the 12 muffin cups and then pour the egg mixture over each one.
Place in the oven and bake for 20-25 minutes until the eggs are set and the tops of the crustless quiches are golden.
Eat hot or cold.