Preheat your oven to 150*C
Prepare your ribs by removing the tough membrane on the bottom side of the ribs.
Use a butter knife to go under the membrane, and lift it up.
Then using your hand, pull back the membrane and it should tear out pretty easily.
Remove excess fatty bits from the ribs.
Season both sides with salt and pepper.
Put it in a baking pan and cover tightly with foil.
Pop it in the oven for 2 hours or until fork tender. (Check with fork)
Longer if the slab is meaty.
When 2 hours is up, remove baking pan from oven.
Crank up oven to 180C.
Unwrap the foil, drain liquid, and brush on 1/2 of the BBQ sauce on both side of the ribs.
Return back in the oven for 15 minutes.
Brush on remaining BBQ sauce and serve.