1 1/2 c Flour 1/2 ts Salt 1/8 ts Cayenne Pepper 6 tb Unsalted Butter * 1 c Sharp Cheddar Cheese, Coarse 3 tb Heavy Cream 1 lg Egg, Beaten Lightly 1 1/2 c Swiss Cheese, Fine Shredded 3 tb Butter, Softened