For the ratatouille, clean and wash or peel the peppers, zucchini, eggplant and onions and cut them into 1-2 cm pieces. Heat 3 tablespoons of olive oil in a large pot, fry the aubergine in it until golden brown, turning it over and taking it out.
Put 3 tablespoons of olive oil into the hot pot, sauté the rest of the vegetables in it. Peel 2 cloves of garlic and press them in. Add can of tomatoes with juice. Add vegetable stock and dried herbs of Provence. Cover and simmer for about 20 minutes.
Add the aubergine and heat up again briefly. Season to taste with salt and pepper.
For the herb croutons, toast bread. Wash the parsley, shake dry and chop the leaves. Peel and finely chop the garlic clove. Crush the bread. Stir in parsley, grated zest of organic lemon and olive oil.
Season to taste with salt and pepper. Serve as a small extra topping with the ratatouille.