Sour Cream Potato Salad
["8 large potatoes, boiled in the jacket, cooled and peeled", "2 medium onions, finely chopped", "1 c. fresh parsley, chopped", "1 small carton sour cream", "1 1/2 c. mayonnaise", "1 1/2 tsp. horseradish", "1 tsp. celery seed", "cherry tomatoes"]
["Mix together sour cream, mayonnaise, horseradish, celery seed parsley.", "In a 4 x 13-inch casserole dish, slice 4 potatoes, salt and pepper.", "Spread 1/2 mayonnaise mixture over potatoes and top with 1/2 of the onions and parsley.", "Repeat and place cherry tomatoes on top.", "Cover and refrigerate at least 8 hours before serving.", "Best made a day ahead."]
["potatoes", "onions", "fresh parsley", "sour cream", "mayonnaise", "horseradish", "celery", "cherry tomatoes"]