In a large roasting pan lined with foil, combine:
1 slab baby back ribs, seasoned liberally with salt, pepper, and whatever else sounds good (I added Tony's)
2 sliced onions
1-2 sliced bell peppers
a handful of smashed garlic cloves
Fold the foil closed and bake at 325 for about 5 hours. Optional: open the foil near the end of cooking, cover with BBQ sauce and broil for a caramelized coating, or finish on the grill.