1. Beat cream cheese and yogurt in a large bowl with a mixer at medium speed until smooth. Stir in Cheddar cheese, ham, onions, horseradish, and mustard. Cover and chill at least 1 hour.
2. Shape cheese mixture into a ball, and sprinkle with parsley. Press parsley gently into cheese ball. Wrap cheese ball in heavy-duty plastic wrap, and chill. Serve with sliced vegetables or whole wheat crackers (vegetables and crackers not included in analysis).
carbo rating: 1