Prepare your Bolognese sauce. This will take 3 hours so you better think ahead. You can make the sauce weeks before the lasagna, it freezes well. Prepare your bechamel sauce and grate the Parmesan cheese.
Preheat your oven to 350°F (180°C).
To prepare your lasagna Bolognese, first butter you 13x9-inch baking pan. Then start with a layer of Bolognese sauce.
Arrange one layer of lasagna noodles to cover the bottom of the baking pan (over your thin Bolognese layer). If necessary, brake your noodles into smaller pieces to cover the baking pan evenly. Make sure the pieces don't overlap each other, so they can cook through.
Spread bechamel on the noodles. Make sure it covers them completely. Without doing so the pasta wouldn't be cooked through properly.
Sprinkle it with a generous layer of grated Parmesan cheese.
Continue with the layering. On top of the cheese comes another layer of pasta, then béchamel, Bolognese sauce and grated cheese. The top layer of the lasagna Bolognese should be béchamel mixed with Bolognese sauce and sprinkled with double amount of cheese.
Bake your lasagna Bolognese for about an hour. It is ready when the edges of the pasta are rippled and the cheese on the top is crispy and has a wonderful brownish-red color.