Combine flour, uncooked rolled oats, baking soda, ground cinnamon, and salt
Cream together soft butter, brown sugar, and granulated sugar
Add egg and vanilla extract to the creamed mixture
Alternately add pumpkin and flour mixture, mixing well after each addition
Stir in raisins or chocolate chips
Drop onto lightly greased cookie sheets
Bake at 350°F for 15-20 minutes or until firm and lightly browned