The secret is that this smoothie has an unusual ingredient: mashed sweet potatoes.
1 cup frozen fat-free vanilla yogurt
1/2 cup cold mashed sweet potatoes
1 cup orange juice
1/2 teaspoon vanilla extract
In blender container, combine all ingredients. Blend on high until smooth. Serve immediately.
Makes 2 servings.
Variation:
Banana Orange Smoothie:
Add 1 small ripe banana and 1 cup orange juice; blend as above.
Makes 3 (8-ounce) servings.