You can use baby back or St. Louis style ribs for this recipe. Cutting the ribs into a few segments before cooking makes it easier to fit them into a small slow cooker and easier to get out once they're done. At four hours, the ribs should be cooked through but should still hold together in pieces for serving. At six hours, they'll be totally falling apart and even more tender, so adjust the cooking time according to your preferences. The flavor of the finished ribs depends a lot on the barbecue sauce you use, so be sure to choose one that you love. Not all commercial barbecue sauces are gluten-free so be sure to check, if needed, or use your favorite homemade barbecue sauce to keep the recipe gluten-free.