Place first 5 ingredients (through molasses) in a large bowl; beat with a stand mixer at medium speed until well blended (about 5 minutes). Add vanilla, egg, and egg white, beating well.
Weigh or lightly spoon flour into dry measuring cups; level with a knife. Combine flour and next 3 ingredients (through salt), stirring well with a whisk. Gradually add flour mixture to butter mixture, beating at low speed until blended. Stir in oats and raisins.
Drop dough by level tablespoons 2 inches apart onto ungreased baking sheets.
Bake at 350° for 12 minutes or until lightly browned. Cool on pan 2 minutes. Remove cookies from pan; cool completely on wire racks.