Using two cheeses (in this case Parmesan and cheddar or gruyère) and roasting the onions and garlic gives extra depth of flavour to this classic cheese and onion quiche. For this recipe you will ...

Stir in the onion and 1/2 teaspoon of the salt ... and then pour the egg-cheese mixture over the vegetables. Place the quiche on a rimmed baking sheet and bake until the filling is browned ...