Combine all the spices for the dry rub in a bowl and pat half the mixture on the back side of the ribs (meatiest side down). Flip the ribs over and use the rest of the dry rub on the meaty side of the rack.
Curl the tin foil up around the ribs as much as you can on all sides, you need the juices to stay inside the foil. Lay an extra sheet of tin foil on the top and wrap it around snugly.
Place on an oven-safe rack over a sheet pan. Bake at 300° 2.5-3 hours or until they reach 145° F.