Preheat the oven to 200°C.
Peel the beetroot and squash then cut them into bite-sized chunks.
Arrange them in a roasting tray, then sprinkle with herbs and drizzle with the oil. Rub the herby oil into the vegetables. Put the tray in the oven.
Meanwhile, tear the bread into chunks, and toss with the oil. Chop the garlic and chilli, sprinkle these over the bread.
When the vegetables are tender (after 25-30 minutes), add the bread, garlic & chilli pieces, mix everything well. Bake for another 5-10 minutes until the bread is crisp and golden.
Meanwhile, thinly slice the onion. Mix the dressing, season to taste.
Transfer the vegetables into a large serving bowl. Add the onions and pour over the dressing. Toss well. Let it cool for a couple of minutes, while you chop the basil leaves.
Add the basil and lettuce leaves. Toss well. Season to taste.