PREHEAT oven to 375° F.
COMBINE all-purpose flour, cake flour, baking powder and baking soda in a medium bowl. Combine butter, granulated sugar and brown sugar in a large mixing bowl. Beat until creamy. Add eggs and vanilla extract. Beat until well mixed. Gradually beat in flour mixture. Stir in morsels. Drop dough by level 1/4 cup measure 2 inches apart onto baking sheets.
BAKE for 10 to 14 minutes, or until golden brown. Cool on baking sheets for 2 minutes; remove to wire racks to cool completely.