First things first—remove the silver skin (the thin membrane on the back of the ribs). It helps the meat get more tender and lets the seasoning sink in better. Rinse the ribs under cold water and pat them dry with paper towels. Then, slice the rack into smaller sections so they fit snugly inside your crockpot.
Mix the paprika, brown sugar, garlic powder, onion powder, smoked paprika (if using), salt, and pepper in a small bowl. Rub this mixture all over the ribs, coating both sides. If you’ve got the time, wrap the ribs in foil and let them rest in the fridge for an hour or two. It really helps build the flavor.
Place the rib pieces inside the crockpot, arranging them with the meat side facing outward. Pour about a cup of barbecue sauce over the ribs, making sure each piece gets a good coating. Save the remaining sauce for basting or serving later.
Cover the crockpot with the lid and set it to low for 6–8 hours, or high for 4–5 hours if you're short on time. Low and slow gives the best texture—the ribs turn buttery and practically fall apart when you pick them up.
Want a sticky, caramelized crust? After the crockpot time is up, preheat your oven broiler. Place the ribs on a foil-lined baking sheet, brush with the remaining barbecue sauce, and broil for 5 minutes. Watch closely so they don’t burn!