Cut the eggplants and zucchini lengthwise into wide slices. Young vegetables do not need to be peeled. Dip the eggplants and zucchini in flour and fry in vegetable oil. It can be fried without flour but tastes better for a casserole with flour. Place on paper towels to absorb excess oil. Allow cooling. This can be done in advance.
Cut the ham into small cubes. Wipe the mushrooms with a damp cloth and cut them into small cubes. Also, chop the onion finely. Press the garlic through a press. Chop the parsley finely. Grate cheese on a coarse grater.
Fry onions in butter, add garlic, mushrooms and fry, stirring occasionally, for 7 minutes. Season with salt and pepper. Add ham and fry for another 5 minutes. At the end add half of the cheese and herbs (leave some herbs) and stir until the cheese is melted. The filling is ready.
Spread the fillings on the edge of the squash or eggplant slices and roll into a roll.
Put the finished rolls in one layer in a heat-resistant dish or baking sheet. From beaten eggs and sour cream, prepare a dressing and pour over the rolls.
Sprinkle with the remaining cheese on top. Cook the zucchini and eggplant casserole in the oven for 20 minutes at 180 ° C.
The cheese should be browned on top. Sprinkle the cooked casserole with the remaining herbs.
Zucchini and eggplant casserole is delicious hot and cold.