Clean and clean the mushrooms. Peel onion and cut into cubes. Wash, clean and slice the zucchini. Heat oil in a pan. Fry the zucchini slices for 1 minute on each side.
Season with salt and pepper. Take out and fry the minced meat in the frying fat for about 10 minutes while turning it until crumbly. After 4 minutes add onion and mushrooms. Wash thyme, shake dry, remove leaves except for something to garnish, pluck from stalks, chop and add to the sauce.
Deglaze with shashlik sauce. Meanwhile prepare the pasta in boiling salted water according to the instructions on the packet. Line a greased casserole dish with slices of zucchini. Form spaghetti into nests.
Spread the meat sauce around the nests. Sprinkle with cheese. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 30 minutes. Garnish with thyme.