Combine mustard, soy sauce, thyme, garlic and ginger. Rub meat (not bones)
all over with mustard mixture and place in roasting pan.
Refrigerate covered 1 1/2 to 2 hours or overnight.
Remove meat from refrigerator and let come to room temperature, approximately
Heat oven to 450 degrees F.
Apple and Onion Dressing: Stuff center of roast with prepared dressing.
Insert meat thermometer between two ribs, without touching bones. Reduce oven
setting to 350 degrees F and bake for 15 minutes per pound or until thermometer
registers 165 degrees F (medium).