Preheat oven to 350 degrees. Cream butter and sugar, blending well. Add egg and vanilla, mixing until fluffy. Set aside wet ingredients. In a separate bowl, mix together dry ingredients.
Add the dry ingredients, alternating with apple sauce, to the wet ingredients. Blend well.
Stir in walnuts and raisins, if using. (I just used raisins.)
Drop two inches apart in heaping teaspoons onto a greased baking sheet. Bake for 10 minutes or until edges brown. Cool on wire rack.