INGREDIENTS
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1 beef prime rib roast (5 lb./2.5 kg), 2 to 3 ribs
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1 Tbsp. black pepper
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1 cup Kraft Zesty Italian Dressing
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1-1/2 cups Kraft Mayo Real Mayonnaise, divided
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1/4 cup horseradish
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1/4 cup Kraft Sweet Onion Vinaigrette Dressing
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1/2 tsp. dried thyme leaves