I threw a pound of turkey in the crockpot with some onion, turned it on low and ignored it for an hour or so. I came back and diced the meat up and threw in 3 cans of beans and 12 Oz of tomato sauce. I added salt, pepper, chilli powder and let dinner cook itself for about 3 hours.
Cost: less than 5 bucks
Prep time: 10 minutes
Results: a crockpot full of chilli for these cold winter nights