2 lbs ground beef
1 to 2 onions, depending on how big they are
2 cans chili beans
1 can white bean (I usually use Great Northern)
1 can red bean (dark red, light red, whatever you like)
1 packet chili seasoning (I used Williams brand, nothing else!)
Large can (I think it was something like 47 oz) tomato juice
Secret ingredient my grandpa used: sugar, a few tablespoons, or as much to your liking. I'm learning that a little sugar on meat make a huge difference in taste. When I did those Double Decker Tacos it called for brown sugar, which I thought was a little strange, but it was the best tasting taco meat I've ever had.
Cook beef until almost done, drain if needed. Add onion and 3/4 of the chili seasoning and cook until slightly soft. Meanwhile, in crockpot add beans, NOT DRAINED, rest of seasoning, sugar and tomato juice. Once meat is done add to crockpot. My crockpot gets really, really hot so I do 2 to 3 hours on high or 4 or 5 hours on low.