Heat oven to 400°F. To measure Bisquick mix, lightly spoon into measuring cup; level off. In medium bowl, stir Bisquick, milk, 1/4 cup of the sugar and butter until soft dough forms. Drop by 30 rounded measuring tablespoonfuls onto ungreased cookie sheet. Sprinkle lightly with remaining sugar. Bake 5 to 7 minutes or until edges are light golden brown. Remove from cookie sheet to cooling rack. Cool completely; about 20 minutes.