Preheat waffle iron and coat with cooking spray. Mix together dry ingredients in one bowl, and wet ingredients in another (except water). Add wet ingredients to dry, cutting in with a fork. Slowly add water to the mixture and stir until reaching desired consistency. Mix quickly and no more than necessary to combine ingredients. Stir in about 1/3 cup raisins if desired. Cook waffles immediately. Makes 4 waffles.