modified from http://ruhlman.com/2010/05/macaroni-and-beef-with-cheese-%E2%80%94-childhood-love/
one 28-ounce can whole tomatoes, pureed in the can with a hand blender or in a blender blender
2 pounds lean ground beef
1 box macaroni
1 cup each grated cheddar and mozzarella cheeses
Brown the ground beef, then add the pureed tomatoes to the pan along with whatever seasonings are handy.
Cook the macaroni in boiling water till it’s half done. Drain it and add it to the tomatoes and beef.
When it’s cooled and the pasta has absorbed the tomato juices, transfer it to a large baking dish and cover it with foil. (can freeze at this point)
Bake it in a 400 degree oven till it’s piping hot (about 45 minutes if it’s cold to room temperature). Just before you’re ready to eat, remove the foil, cover macaroni with the cheese and broil till it looks beautiful.