Brown ground beef (or turkey) and chopped onions in a large skillet then add garlic and jalapeño, cook for 2 more minutes. NOTE: using a Chop & Mix inexpensive utensil makes cooking ground meat so easy.
Place meat mixture into a crockpot on high
Add cumin and chili powder, stir to combine
Add undrained ranch style beans and tomatoes
Cook on low for 4-6 hours.
Serve with grated cheese and sliced jalapenos sprinkled on top.