Instructions: Place the bananas in a single layer on a baking sheet; freeze until hard.

Combine the bananas, pineapple juice, yogurt and Blackberries in the container of an electric blender; process until smooth.

Serve immediately.

If you would like to email yourself the recipe for later use, or share the recipe with your friends or family, enter the email addresses below and this recipe will be emailed to you and others as well.