Chop onions and carrots
Pour some boiling water on your tomatoes
Peel and chop tomatoes
Fry onions, carrots, and ground beef
Simmer with milk and add tomatoes
Prepare your lasagna dough and leave
Melt butter in a pot, adding flour for your bechamel sauce
Add the rest of the ingredients and cook your bechamel sauce
Divide the dough, spread it, and cut it into rectangular pieces
Grate cheese and prepare a roaster with butter
Place rectangular lasagna noodles and the first layer on top
Repeat the layers all over again
Bake in the oven and serve