1. Heat oven to 375 degree F. Coat two large baking sheets with nonstick cooking spray.
2. With electric mixer, cream together the butter and sugar. Beat in egg, pumpkin and vanilla.
3. Sift together flour, baking powder, salt, cinnamon and allspice. Stir into pumpkin mixture. Stir in chopped walnuts and raisins.
4. Drop batter by rounded tablespoonfuls onto prepared baking sheets. Bake at 375 degree F for 12 to 15 minutes, until golden on edges. Cool on wire racks.