Prime Rib with Horseradish Sauce

Ingredients (13)

• 1 bone-in beef rib roast (4 to 6 pounds)
• 1 tablespoon olive oil
• 2 teaspoons salt
• 2 teaspoons coarsely ground pepper
• 2 tablespoons each minced fresh rosemary, and minced fresh thyme, optional
• HORSERADISH SAUCE:
• 1 cup sour cream
• 1/4 cup mayonnaise
• 4 tablespoons prepared horseradish
• 1 teaspoon coarsely ground pepper
• 1/4 teaspoon salt
• 1/4 teaspoon Worcestershire sauce
• Optional: warm mashed potatoes and cooked asparagus