I love our slow cooker/crock pot. We use ours all the time. I got this recipe from someone here years ago, so I can't take credit, but it's one of hubby's absolute faves. It's sort of like what JEP posted, just with a bit more stuff.
The best part is that you can change it around, add more or less depending on how many you are feeding or how many days of leftovers you want to have. If you like it, you'll definitely want leftovers as it gets better the next day.
This amount will feed two to three people with leftovers for a day or two, depending on how much you eat.
Take two or three chicken breasts and put them in along with a couple of cans of chopped tomatoes, two to three cans of pinto beans or red kidney beans and taco seasoning. Cook on high for a few hours, stirring occasionally, until the chicken is cooked through. Then you shred the chicken and stir it all together.
We serve it on soft tortilla shells wrapped up burrito style with shredded cheese inside and out. I also like a bit of sour cream with mine.
I have changed mine up a bit over the years and the last few times we've made it, I have done the chicken breasts in the oven for a bit, just to speed things up, and then added them to the other stuff in the crock pot, but that's only for the speed of things really. It does excellently in the slow cooker.
Also, I've found some seasoned canned tomatoes that add some nice flavor, but you can adjust the seasoning depending on what you like. The best thing about this recipe is you can't really go wrong, just keep fiddling until it is how you like it. The only thing to make sure about is to drain your beans and tomatoes a bit or else it can get a bit soupy. You can fix that though too, just mix up a bit of cold water and corn starch and thicken with that. Works a treat.
If you ever need slow cooker ideas, let me know. I have tons!
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