Beat margarine, sugar, and egg together until fluffy.
Mix together flour.
Salt, soda, and spices.
Stir potato flakes, nuts, and zucchini into flour mixture; add to sugar mixture alternately with milk.
Mix well after each addition.
Drop from teaspoon on greased cookie sheet.
Bake at 350° for 12 to 14 minutes.
Cool on brown paper.