Combine flour, pumpkin pie spice, baking powder, baking soda, and salt in medium bowl. Beat butter and granulated sugar in large mixer bowl until creamy. Beat in pumpkin, eggs, and vanilla extract. Gradually beat in flour mixture. Stir in morsels and nuts. Drop by rounded tablespoon onto grease baking sheets. Bake at 375 degrees for 15 to 20 minutes or until edges are lightly browned. Remove to wire racks to cool completely. To make the vanilla glaze, combine all the ingredients and mix well. Spread or drizzle the cookies with the glaze.
