In A Large Saucepan, Bring Cider To A Boil. Reduce Heat To Medium-Low. Toss The Cheeses With Cornstarch And Pepper; Stir Into Cider. Cook And Stir For 3-4 Minutes Or Until Cheese Is Melted. Transfer To A Small Fondue Pot Or 1-1/2-Qt. Slow Cooker; Keep Warm. Serve With Bread Cubes.