1 cup (8 oz.) yogurt, any flavor or plain
1 cup milk or any flavored juice
1 large banana sliced
1/2 teaspoon vanilla extract
8 to 10 ice cubes

Place all ingredients, except the ice cubes, into container of electric blender and blend on high until smooth. While blender running add 2 to 3 ice cubes at a time through center opening in the lid. After all the ice cubes are added, blend until smooth.