Raspberry - Banana Smoothie

2 Bananas, peeled and sliced
1 1/2 c Pineapple juice
1 pk Vanilla low-fat yogurt (8oz)
1 c Fresh or frozen raspberries

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

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