Heat oven to 375°F. Lightly grease cookie sheet. In small bowl, combine chicken, 1 tablespoon of the bread crumbs, cashews and 3 tablespoons sweet and sour sauce; mix well.
Separate dough into 8 triangles. Press shortest side of each triangle to widen slightly. Place about 1 tablespoon chicken mixture on widened end of each triangle; fold 2 corners over filling. Press dough around filling to form ball. Fold up long pointed end of crescent dough 1 inch toward filling; firmly twist to form drumstick shape.
Place remaining bread crumbs in shallow bowl. In another shallow bowl, beat egg. Dip each drumstick in egg; coat with crumbs. Place, seam side down, on greased cookie sheet.
Bake at 375°F. for 14 to 17 minutes or until deep golden brown. Cool 5 minutes. Arrange on serving platter. Serve warm with additional sweet and sour sauce. Garnish with green onion fans.