What's a good recipe you cook that doesn't need expensive ingredients?

Day 1 : Roast, onion soup mix, chopped potatoes and onions if you're feeling spicy. Put all of that and some water in the slow cooker. Eat your fill, shred and keep the rest. Day 2: throw frozen veggie mix into pot, put back on slow cooker, you now have beef and veggie soup for the next couple of days.

Biggest expense is the meat here, you can even probably stretch it longer by putting in some rice with the potatoes. Feel free to spice as desired.