What was/is your favorite CHEAP recipe?

I made mine for the first time in years the other day: Vegetarian Red Beans and Rice.

For about $7 in ingredient's it made 5 big meals.

1 pound of small redbeans ($1.25)
1 green bell Pepper (.50 cents)
1 large onion (.75 cents)
3 celery stalks (.99 cents)
6 cups water
4 Tbps Tony Chachere's Creole seasoning (had it around, but can be bought at dollar store for $1.25 or a generic "Cajun seasoning" can too/)
Salt, Pepper, Paprika (1 Tbsp)
Hot sauce (had it around, but can be bought at dollar store for $1.25)
2 cups of dry Rice (from dollar store for $1.25 for 32 ounces)
Note:If you have bay leaves laying around throw a few in too.

Soak beans overnight and rinse. Add water into beans. In separate pot sauté the veggies. Add veggies to beans. All all seasonings except salt. Cook for 2.5 hours. Add salt. Cook for another 15 minutes. Serve on rice.