Place oats in blender or food processor container and process until oats are finely ground. Add yogurt and water; blend to combine completely. Add pear, berries and spinach, if using (Add additional water if thinner consistency is desired.); blend until smooth. Yield: about 1 3/4 cups
Note: Frozen fruit will make a thicker, frozen smoothie. If fruit is not frozen, add three to four ice cubes and blend until smooth for a colder and thicker smoothie.