In a small bowl, combine dry seasonings and set aside.
Rinse ribs and pat dry. Rub dry seasonings into ribs with your hands until completely coated. sprinkle liquid smoke over the ribs.
Crumple a few pieces of foil and lay them on the bottom of the slow cooker. Layer the ribs on top of the foil.
Cover and cook on low for 7-9 hours or on high for 4-6 hours.
Brush ribs with barbecue sauce and serve hot. To caramelize the sauce (optional) place cooked ribs in a single layer on a foil lined baking sheet and broil for 3-4 minutes, careful not to let the sauce burn.
You also have the option of cooking the ribs with BBQ sauce or slathering them after they’re finished cooking. Waiting until the end to add the sauce helps the flavor of the meat itself really come shine, rather than the sauce.