1. Preheat oven to 350°.
2. Combine first 4 ingredients in a large bowl; stir well. Combine banana, oil, and vanilla; stir well. Add banana mixture to dry ingredients, stirring to combine. Let stand 15 minutes.
3. Drop dough by rounded tablespoonfuls onto ungreased baking sheets. Bake at 350° for 15 minutes or until lightly golden. Transfer cookies to wire racks; cool completely.
carbo rating: 8