TOKYO — Giant American cookie monsters Mrs. Fields and Famous Amos raced to Japan in the ‘80s to take a chomp out of the booming cookie market. They ended up with crumbs instead, while Pennsylvania Dutch Aunt Stella became queen of the upscale cookies in this country. Hardly a U.S. household name, Aunt Stella’s Handmade Cookies and Cakes is the brainchild of Joseph Dunkle, an American who first c