comparing prices, which meals are the most ecomical for large families?

Hands down, the cheapest meal for me to prepare for my family is a spaghetti dinner. I tend to buy all of the items needed when they are on sale, so I can stock up. One 900g pasta pkg for 99 cents, one can of spaghetti sauce for 79 cents, 1/6 of an approximately $10 pkg of ground beef, and frozen veggies I bought and cut up on my own (like onion and green and red peppers). Pasta meals in general tend to be the cheapest. Even when I make Hamburger Helper for the kids, I can do it fairly reasonably priced, because I make one package stretch out farther by adding extra water and/or milk and my own pasta. I won't buy the HH unless it's on sale either. Another reasonably priced meal is breakfast for dinner. If I can buy a 1 lb pkg of bacon, or some sausages at a decent price, I can make that up with eggs and toast. Fast and easy and yummy.