This indulgent caramelised onion and gruyère tart is the perfect dish for a veggie lunch or to bring along to a picnic. It feeds 6 so there's plenty to go around, serve with Piccolo tomatoes to contrast the richness of the tart.
Goat Cheese : Puff pastry is Ina's go-to appetizer base, because it always comes out right. Crumble goat cheese on top of the onion filling and finish with a slice of tomato. Bake the tarts until flaky and slightly browned.