Prime Rib Roast

Ingredients

A bone-in prime rib roast

3 medium onions (thickly sliced)

1 tsp coarse sea salt per lb of roast

½ tsp ground black pepper per lb.

1 tsp minced garlic per lb.

1 tsp fresh rosemary per lb.

1 tsp fresh thyme per lb.

½ tsp olive oil per lb.