Heat oven to 400. Mix cream cheese, 1 cup of Swiss cheese, the dressing and corned beef. Spread in pie plate, 9 x 1 1/4 inches, or quiche dish, 9 x 1 1/2 inches. Top with sauerkraut and remaining 1/2 cup Swiss cheese. Bake about 15 minutes or until bubbly around edge. Serve hot with pretzel crackers or cocktail rye bread.