Clean the spinach and wash it thoroughly. Peel and finely dice the onion and garlic. Heat the oil in a pot. Sauté onions and garlic in it. Add the spinach, let it collapse, take it out and let it cool down.
Crumble the cheese roughly. Chop the nuts. Cook pasta plates in plenty of boiling salted water for 8 minutes. Remove the lasagne and rinse under cold water. Mix spinach, cheese, nuts and thyme. Spread the spinach filling over one half of the lasagne sheets and fold over.
Place the lasagne plates in a greased casserole dish. Crumble white bread. Mix with parmesan and spread over the lasagne plates. Put butter in flakes on top. Bake in the preheated oven (electric: 200 °C/ gas: level 3) for 5 minutes.