Pumpkin Poundcake With Brown Sugar Walnut Glaze

2 1/2 cups flour

1/2 teaspoon baking soda

1/4 teaspoon salt

1 tablespoon pumpkin pie spice

3/4 cup dark brown sugar -- packed

1/2 cup granulated sugar

3/4 cup butter -- softened

1 egg

1 cup pumpkin puree

1 teaspoon vanilla

1 cup raisins

1/2 cup macadamia nuts -- chopped

Preheat oven to 325. Combine flour, baking soda, salt and spice. Beat sugars together with mixer. Beat in butter. Add egg, pumpkin and vanilla. Beat until well mixed, light and fluffy. Stir in flour mixture, raisins and nuts. Drop by round spoonfuls onto ungreased cookie sheets 2 " apart. Bake until slightly browned along edges, about 20 minutes. Cool on flat surface.