Simple, delicious, and very refreshing: frozen banana puréed into something that's quite like ice cream, without the dairy and calories.
Yield  2 servings
Time  2-3 hours (to freeze)

    * 2 ripe bananas
    * ½ c walnuts, chopped

Peel and chopped bananas, wrap in plastic, and freeze for several hours.

Unwrap and process in juicer or blender. Stir in walnuts and serve.