In a small bowl, stir together the flour and baking powder. Layer ingredients in order given in a 1 quart “wide mouth” canning jar. Press each layer firmly in place before adding next ingredient. It will be a tight fit. On a tag, write the following instructions: 1 cup butter, softened 1 teaspoon vanilla extract Preheat oven to 350º. Empty this jar of cookie mix into a large mixing bowl. Mix well. Add butter and vanilla and stir until blended thoroughly blended. Shape into balls the size of walnuts, and place 3 inches apart on an ungreased baking sheet. Flatten balls with the palm of your hand. Bake for 14 to 18 minutes or until edges are very lightly browned. Cool 5 minutes on baking sheets then remove to wire racks to cool completely.