Season the rib roast generously on all sides. Load the rib roast onto the rotisserie, with spikes between the bones.Scatter the carrots, celery, onion and thyme in the roasting tray. Insert roasting tray into rotisserie.Set rotisserie to cook according to manufacturer's instructions.
Please read the manual and find cooking time chart, as your machine may be different from mine.When done, let roast rest while you make the Red Wine Au Jus. Pour the contents of the roasting pan into a medium saucepan set on medium-high heat.
Add the red wine and beef broth. Simmer on low for 8 minutes, uncovered. Strain and serve with the Prime Rib Roast.To carve the Prime Rib Roast, first, cut off the bones. Cut each bone apart. Then slice the rib roast into desired thickness.
rotisserie cook time will vary, check manufacturers instructions