If you don't want to heat up the house, this beef recipe is perfect. It's also great as leftovers.
Here's what you'll need:
2 packages of Stew Meat ~ I think I had a little over 2 lbs
1 pkg Onion soup mix
1 Beer or 12 oz water
1 t Cumin
1 t Chili Powder
1 t Chipotle Powder
3 cloves Garlic
2 Chipotle Peppers chopped
Put it all in the crock pot and crock on low for 10 hours. It might have been done sooner but that's when I got around to it and it was perfect. I don't think you can really over cook beef in the crock pot unless you run out of liquid anyway.
Pull it out, give it a rough chop and wrap up in tortillas. My kids actually ate these and asked for seconds..SCORE!