Layer the following in a 9x13 pan:
lasagna noodles (cooked)
1 lb. hamburger (cooked)
Bake at 350 for about 45-60 minutes. The secret to lasagna is to let it sit after it has cooked at least 10 minutes before cutting into it.
Make and freeze. If frozen, you'll need to defrost and then cook OR cook for 2 hours, covered.