Liberally rub ribs with salt, pepper and onion powder. Grill to put marks on each side.
Place in an aluminum foil pouch and cover with 1/2 of the bottle of BBQ sauce.
Place pouches in the cheap baking pan and fill with water up to the sides of the pouch.
Bake at 300 for 1 hour, 250 for 1 hour then 200 for 1 hour.
Remove from oven and pouch. If desired cut in half (1/3, or 1/4) for portioning.
Return to grill. Slather top with BBQ sauce and grill top down. Repeat with bottom. Slather with Jalapeno Jelly and repeat both sides.
Serve warm with extra jelly.