I used one of my large baking dish and I smeared the bottom with spaghetti sauce (half a jar)--you can use what you like jar or homemade--I do both--this time I used jar.
I then browned some ground beef with some onion and drained the grease, I then added a whole jar of sauce--and let it simmer awhile.---I used spaghetti noodles broken up and cooked them just until they were al dente--then I added the drained noodles to the beef and sauce mixture.
Ricotta--I took a tub of ricotta and added the egg and parsley
After I smeared the bottom with spaghetti sauce I put a nice layer of the noodle mixture in the dish
I then spread the ricotta over the noodles
added the rest of the noodles and poured the bechamel sauce over those
I covered it with foil and baked it about 40 minutes at 350 degrees and then when my hubby was just about to walk in the door I topped it with mozzarella cheese and put it back in the oven on high until the cheese was bubbly and turning golden brown
Enjoy--we sure did!