Season the ground beef with salt and pepper, then form into bite-size meatballs. If your meatballs fall apart, try adding a single egg and some breadcrumbs as a binder.
Cut a ½ head of cabbage down the center, then chop into smaller pieces.
Add the chicken, meatballs, tomatoes, cabbage and dry ingredients to the slow cooker.
Pour 8 cups of chicken broth over the ingredients and mix thoroughly.
Cook on low for 7-8 hours or on high for 4-5 hours.
Garnish with cilantro, sour cream, Mexican cheese, avocado, lime or ranch.