Cream margarine and brown sugar in a large bowl. Add eggs, 1 at a time,.
beating well after each addition. Add pumpkin and vanilla. Beat until smooth.
Combine next 7 ingredients in a small bowl. Add to margarine mixture in.
2 additions, mixing well after each addition until no dry flour remains.
Add chocolate chips (or raisins), and nuts (optional). Mix well. Drop, using 1 ½ Tbsp (25 mL) for each, about 2 inches apart onto greased cookie sheets. Bake in 375F (190F) oven for about 15 minutes until golden. Let stand on cookie sheets for 5 minutes before removing to wire racks to cool. Makes about 4 dozen (48) cookies.