Place on a plate, drizzle with olive oil, and microwave for 6 to 8 minutes, set aside.
Meanwhile, sauté the minced meat with a pinch of salt and, when it is very dry, add the tomato sauce.
Hit the salt.
In a refractory that can go in the oven greased with olive oil, place a layer of ground beef (ready) with tomato sauce, cover with 1 layer of slices of mozzarella cheese, place 1 layer with slices of cooked zucchini, and cover with another layer of slices of mozzarella cheese.
Repeat the last instructions until you finish with the last layer of mozzarella (this last layer of cheese makes double).
Bake in a conventional oven for 60 to 80 minutes at 180°C, then serve, or freeze in individual portions.