Peel the onion. Clean and wash the peppers. Cut both into large pieces. Clean and wash the zucchini and eggplant and cut them into slices of about 1 cm thickness. Wash the potatoes thoroughly and cut them into slices. Wash tomatoes and cut them crosswise. Spread everything on the fat pan
Wash the herbs and remove the needles or leaves. Add to vegetables with bay leaf. Season vegetables with salt and pepper
Peel and coarsely chop the garlic. Heat the olive oil and toss the garlic briefly. Pour hot oil immediately over the vegetables. Bake in the preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for 35-40 minutes, turning the vegetables several times. Add the olives approx. 15 minutes before the end of the cooking time and cook along. Season ratatouille with salt and pepper and serve. Goes well with fresh country bread or flatbread
You can use olive oil more generously because of its positive effects. But: Reduce other fat suppliers (e.g. spreadable fat, sausage and cheese) so that the total calories do not increase