Prep homemade marinara, and besciamella using the associated links. Layer Marinara then oven-ready Lasagna noodles. Put marinara on top, spoon besciamella over top then Italian style shredded cheese. Repeat until you're to the top of the pan. End with besciamella and a big layer of cheese on top.
Bake covered with foil @ 400 for 35 minutes. Then remove foil and broil for 5 minutes until top is bubbly.