Tian

Serves 4–5. 6 steps

2 onions	sweat, then discard thyme	Spread onions in base of dish. Top with pesto. Arrange courgettes and tomatoes in concentric rings on top, the slices standing nearly vertical, alternating courgettes and tomatoes. Sprinkle breadcrumbs on top.	Bake in a non-convection oven at 205°C for 70–90 minutes. Push down the vegetables from time to time so that they're submerged.
fresh thyme sprigs
2 tablespoons olive oil
nettle pesto
400g yellow courgettes	cut into 2.5mm thick slices
400g tomatoes
breadcrumbs	combine breadcrumbs with finely chopped fennel and salt
salt and fennel