the best way to get the most for your food dollar is to buy in bulk, split the cost and bulk with someone if you can, reportion and rewrap at home, take advantage of the best sales, never, ever buy what you wouldn't have bought anyway, serve casseroles and other one-dish meals that stretch meat and plan meals around the meat you have.
i check to see the veggies on sale that week. then i match it up with what i have in the freezer. between canned, fresh and frozen, there's always something. i make a lot of soup/stews for healthy one dish meals that use lots of veggies and a little meat.
i buy bread on sale and freeze it, but not for long. and remember to cook once for two meals. when i'm down to just a little thick soup or a little stew, i pour it over rice and call it casserole. i hardly throw anything away. and eggs are still a bargain protein for breakfast, lunch or dinner.