Heat oven to 300° F.In a small bowl mix together the salt, garlic powder, onion powder, pepper, chili powder, paprika and cayenne until combined

If the ribs still have the thin clear membrane covering the back of the rack, you will need to remove it

Using a paring knife, start at one end of the ribs and carefully slide it under the membrane, until you have separated enough of the membrane to hold onto

Use a paper towel to hold your grip on the membrane

Using a spoon or paring knife, slowly pull back on the membrane until it separates from the rack

Rub the seasoning all over the ribs on both sides

Place the ribs, meat-side up, onto a rimmed baking sheet

If necessary, trim a few ribs off the rack and arrange them all to fit on the baking sheet

Cover the baking sheet tightly with aluminum foil, and bake until very tender, about 2 ½-3 hours

The meat should be practically falling off the bone

While the ribs are in the oven, make the barbecue sauce

Remove the ribs from the oven

Remove the foil and generously brush both sides of the cooked ribs with barbecue sauce

Arrange a rack in the upper ⅓ of the oven

Turn the broiler to high

Broil the ribs for 2-4 minutes, just until the barbecue sauce begins to caramelize

Watch them carefully, so that they don’t burn

Remove from the oven, lay the foil over the ribs and let them rest for 10 minutes before digging in!