Preheat the oven to 350 degrees.

Place the roast in a roasting pan. Place the bone side down.

Mix the soy sauce, lakanto, and garlic together.

Pour this mixture on the roast.

Put the onions on and around the roast.

Bake this uncovered in the oven for two hours.

Using a digital thermometer cook till 125 for medium rare, and 130 for medium.

Take out of the oven and let it stand for 20 minutes.

Place the roast rib side down to carve.