Peel onion and garlic. Chop the onion finely. Press garlic through a garlic press. Quarter the bell peppers, clean, wash and cut into large pieces. Clean, wash and finely dice the zucchini and eggplant.
Wash and halve the tomatoes. Wash the herbs, dab dry and remove leaves or needles, except for some for garnishing, from the stalks and chop finely. Heat the oil in a large pan. Sauté the peppers and eggplants in it.
Add zucchini and tomatoes and fry. Add garlic and onion and fry until transparent. Deglaze with chunky tomatoes and simmer for about 5 minutes. Season with salt, pepper and sugar. Add herbs and fold in.
Cover and set aside. Mix eggs, flour, milk and salt with the whisk of the hand mixer. Brush a coated pan (26 cm Ø) with oil. Bake 4 pancakes one after the other, adding any remaining herbs.
Warm up the ratatouille again if necessary. Fill pancakes with ratatouille. Garnish with herbs if necessary.