if you can find them, buy lasagna noodles that are made for no boil. put a generous layer of sauce down, then a layer of dry noodles, then keep layering your ingredients, finishing with a good layer of sauce before the next layer of noodles are put down. the noodles need to absorb the water out of the sauce.
this way, you could make it ahead, and pop it in an hour before you are ready to eat.
in nomine patri, et fili, et spiritus sancti.
Meh nom eh noh...doot dooooo do do do.