Pumpkin-Nut Cookies

1 cup butter
1 cup brown sugar, firmly packed
1 cup cooked, mashed pumpkin
1/2 tsp. orange extract
1 egg
2 cups sifted flour
2 tsp. baking powder
1 1/4 tsp. pumpkin pie spice
1/4 tsp. salt
2 cups chopped walnuts

Cream butter and sugar together thoroughly. Add pumpkin, orange extract and egg, blending well. Sift flour with baking powder, salt and spices. Blend into first mixture. Stir in walnuts. Drop by teaspoonfuls onto greased cookie sheet. Bake at 375 degrees for 12 minutes.