Cream butter and sugars until light and fluffy, 5-7 minutes. Beat in eggs. In another bowl, whisk remaining ingredients; gradually beat into creamed mixture. Divide dough into quarters; shape each into a 12-in.-long roll. Wrap tightly in waxed paper; refrigerate overnight., Preheat oven to 375°. Unwrap rolls and cut dough crosswise into 3/4-in. slices. Place 2 in. apart on ungreased baking sheets. Bake until set, 10-12 minutes. Remove from pans to wire racks to cool.