In a large bowl, combine the first 9 ingredients. Divide into 3 batches; store in airtight containers in a cool, dry place for up to 6 months. Yield: 3 batches (9 cups total).
To prepare cookies: Preheat oven to 375°. In a large bowl, cream butter until light and fluffy, 5-7 minutes. Add egg and molasses; mix well. Add 3 cups cookie mix; beat until smooth.
Shape into 1-in. balls and roll in sugar. Place 2 in. apart on ungreased baking sheets. Bake until the edges are firm and the surface cracks, 9-11 minutes. Cool on wire racks.