Assuming your not vegetarian, you might want to buy some chicken ( buy a whole one and cut it yourself, it's cheaper). With the chicken you can use the breasts for a chicken parmesan, using your store sauce and some cheese. I've found that making my own sauce is less expensive than the store bought versions, assuming you have basics on hand like onions, mushrooms, parmesan cheese, garlic, basil. Also, shepards pie is quick and easy. All you need is some ground beef, mashed potatoes, and whatever veggies you like, top the casserole with some bread crumbs and a few pats of butter or margarine, then bake it.