3 Tbsp paprika
3 Tbsp packed brown sugar, divided
1 Tbsp pepper
2 tsp salt
2 tsp onion powder
2 tsp granulated garlic
1/4 tsp cayenne pepper
2 racks (2 1/2- to 3-pound each) St. Louis-style spareribs, trimmed, cut in half crosswise*
1/2 cup ketchup
6 Tbsp molasses
2 Tbsp Dijon mustard 1 Tbsp cider vinegar
1/2 tsp liquid smoke
- Combine paprika, 2 tablespoons brown sugar, pepper, salt, onion powder, granulated garlic, and cayenne in bowl. Pat spareribs dry with paper towels and rub with spice mixture.
- Arrange ribs vertically** in slow cooker with thick ends pointing down and meaty side against interior wall (ribs will overlap). Cover and cook until ribs are just tender, 7 to 8 hours on low or 4 to 5 hours on high.
- Adjust oven rack 3 inches from broiler element and heat broiler. Set wire rack in aluminum foil-lined rimmed baking sheet and coat with vegetable oil spray. Transfer ribs meaty side up to prepared rack. Let ribs sit for 10 minutes to allow surface to dry out.
- Whisk ketchup, molasses, mustard, vinegar, liquid smoke, and remaining 1 tablespoon brown sugar in bowl until sugar has dissolved. Brush ribs with half of sauce and broil until sauce is bubbling and beginning to char, about 4 minutes. Remove ribs from broiler and brush with remaining sauce. Tent loosely with aluminum foil and let rest for 5 minutes. Cut ribs in between bones to separate. Serve.
*We don’t have a cleaver, so we are going to ask the butcher to cut them for us next time. First time out, we just laid the ribs in diagonally.
**Standing arrangement image below:
America’s Test Kitchen