Step 1

Preheat oven to 300 degrees. Line a baking sheet with aluminum foil and set aside.

Step 2

Locate the thin white membrane on the underside of the ribs. Remove this completely. To get started, slide a small sharp knife under the membrane to help release it. Set the knife aside and pull up on the membrane firmly and discard.

Step 3

Wash the ribs under cold water and pat dry with paper towel. Set aside.

Step 4

Whisk together the brown sugar, dry mustard, paprika, onion powder, garlic, powder, cayenne pepper, ground black pepper, and salt.

Step 5

Lay each rack of ribs onto a sheet of aluminum foil. Sprinkle the seasoning mixture evenly over each side of both ribs, rubbing it into the meat as you do so.

Step 6

Wrap the ribs tightly in the aluminum foil. Place the wrapped ribs onto the prepared baking sheet and place in the oven. Cook for 2 hours.

Step 7

Remove the ribs from the oven and remove the aluminum foil from each rack. Place the ribs back onto the baking sheet and return to the oven for 30 minutes.

Step 8

Remove the ribs from the oven again and distribute half of the sauce evenly over both sides of both racks. Return the ribs to the oven for 30 minutes.

Step 9

Once again, remove the ribs from the oven, baste the top of the ribs with the remaining sauce. Place back in the oven and broil for 3-5 minutes until slightly charred.

Step 10

Remove from oven and serve.