Sugar-Free Banana Cookies Easy, healthy, AND sugar-free! 3 ripe bananas 1 cup dates, pitted and chopped 2 cups rolled oats 1/3 cup vegetable oil 1 teaspoon vanilla extract Preparation Preheat oven to 350 degrees F. In a large bowl, mash the bananas. Stir in oats, dates, oil and vanilla. Mix well and allow to sit for 15 minutes. Drop by teaspoonfuls onto an ungreased cookie sheet. Bake for 20 minutes or until brown.