Check out this article about eating well with a recession budget. My list to help me remember what foods to eat all the more:

potatoes

eggs

beans

(plain) yogurt

milk (including reconstituted powdered milk)

carrots, kale or collards, onions, canned or frozen corn, peas, tomatoes, broccoli

bananas, apples

peanut butter, almonds

lean ground beef, chicken and turkey, and fish.

Whole Wheat Pasta

Brown Rice