I am a widow with a small food budget. You have to cook. I plan my menus for the coming week around what is on sale. Frozen vegetables are just as good as fresh, dried beans are cheap, potatoes are cheap. Eggs are a real bargain. Saturday is my day to cook. I make a frittata, a casserole, and soup or chili then put into single servings. Some goes into the freezer for days I don't have time to cook. Chicken legs or thighs are flavorfu and usually less than $1 a pound on sale.