One Cup Cookies 1 teaspoon cream of tartar 1 teaspoon baking soda 1/2 teaspoon salt 3 1/2 cups all-purpose flour 1 cup granulated sugar 1 cup brown sugar 1 cup margarine 1 egg 1 cup vegetable oil 1 cup oatmeal 1 cup Rice Krispies® 1 cup coconut 1 teaspoon vanilla extract 1 cup nuts (optional) Sift together the cream of tartar, baking soda, salt and flour. Beat together the sugar, eggs, oil, margarine and vanilla extract. Add to all the dry ingredients; mix and chill. Form into 1-inch balls and flatten with a glass. Bake at 350 degrees F for 12 to 15 minutes.