Cheese and Onion Tart

I really like doing these simple tart dishes, which seem suited to the summer season, just piling whatever ingredients are desired into the middle of a sheet of puff pastry  skirted with a glaze of milk and stuck in the oven. I make a Cheese and Onion Tart today, slowly sautéing sliced onion with rosemary before sprinkling on the pastry with chunks of cheese with herbs. I have dinner 20 minutes later.

Cheese and onion tart