There's a lot of things you can freeze, lasagna, ziti, manicotti, enchiladas. A lot of things that you would make in a 9x13 dish, I break up into 2 pans of 8x8, and I freeze it before cooking. I'll do things such as cook chicken in a crock pot for several hours and then portion it out into freezer bags to use in recipes later on. I also keep chopped green peppers, onions, etc in freezer. If I make fahitas one night, I'll buy ingredients for 2 meals, slice up the meat, veggies etc and freeze for later use (without cooking it). I but ground beef in bulk and freeze it so I always have it on hand. I've even heard of people that will cook ground beef and then freeze it so all you have to do is add it to whatever you are making after thawing it out.
I'm never organized enough to spend a whole day cooking meals for later on that month, but I try to keep things on hand for easy meals.
