Preheat oven to 375°. Beat butter, cream cheese and flour until smooth. Shape tablespoonfuls of dough into 36 balls; press onto the bottom and up the sides of greased miniature muffin cups., In a large skillet, cook sausage over medium heat until no longer pink; drain and crumble. Sprinkle sausage, Swiss cheese and chives into muffin cups. Beat egg, cream, salt and pepper until blended; pour into shells. , Bake until browned, 28-30 minutes (for a browner bottom crust, bake on a lower rack). Serve warm.