This dish is easy to put together and almost always a crowd-pleaser. We use besciamela along with marinara sauce for the filling, no ricotta. I use a little mozzarella in the layers, although my husband only uses parmesan, so you can modify to your liking.
Cook the lasagna according to instructions. Drain and rinse so the pasta does not stick together.
Preheat oven to 350 degrees.
Mix the two sauces together in a small bowl.
Add a thin layer of marinara sauce to the bottom of a 9 x 13 pan. Then place a layer of lasagna on the bottom. Cover the lasagna with 1/4 of the sauce mixture, then sprinkle lightly with some mozzarella cheese. Repeat these layers three more times so there are four layers of pasta.
Sprinkle a heavier layer of mozzarella on top, then lightly dust with Parmesan.
Place pan in heated oven and cook for 20-25 minutes, just until the sauce bubbles a bit. If the top is not browned, you can turn on the broiler for a 30-60 seconds or so to brown the cheese. Remove from the oven and let stand for 10 minutes to set.