1 large onion, chopped
1 bell pepper (I use red because I hate green ones), chopped
2-4 garlic cloves, minced (or from a jar, which is what I used)
Cook these up in some olive oil (or none) until softer.
Then put it all in the crock pot and add:
Three (15.5 oz) cans of beans, any kind you want. (2 Kidney/1 pinto is what I do)
3 Tbsp. Chili powder
1 cup water or stock (No-chicken stock is good if you need to use it up)
One 28 oz crushed tomatoes
One of those baby cans of tomato paste
Stir it up and cook on low for about 6 hours. Mine usually gets done sooner though.
I sometimes add cumin and my boyfriend likes McCormick chili powder in it too