Best-Ever Barbecued Ribs

1. 1

   Preheat oven to 350u00b0F. Combine first 5 ingredients in a small bowl. Place each rack of ribs on a double layer of foil; sprinkle rub all over ribs. Wrap racks individually and divide between 2 baking sheets.

2. 2

   Bake ribs until very tender but not falling apart, about 2 hours for baby backs and 3 hours for spareribs. Carefully unwrap ribs; pour any juices from foil into a 4-cup heatproof measuring cup; reserve juices. Let ribs cool completely. DO AHEAD:

3. 3

   Build a medium-hot fire in a charcoal grill, or heat a gas grill to high. Add broth or water to rib juices, if needed, to measure 1 1/2 cups. Whisk in barbecue sauce to blend.

4. 4

   Grill ribs, basting with barbecue sauce mixture and turning frequently, until lacquered and charred in places and heated through, 7-10 minutes. Transfer to a cutting board; cut between ribs to separate. Transfer to a platter and serve with additional barbecue sauce.

* Per serving · 4 servings · Values may vary.