If you'd like to adapt this easy stovetop Taco Soup for your crock pot, I recommend basically following the steps we use to make our Classic, Healthy Crock-Pot Turkey Chili: Cook your meat and onions in a large skillet before adding them, along with your other ingredients, to your slow cooker. Cook on high for about 4-5 hours, or on low for about 6-8 hours. Presto ... now you've got an EASY slow cooker Taco Soup!