I realize pina coladas don't have bananas in them. I just threw one in for nutritional value.
Throw it all in the blender...
Blend 20 seconds or until smooth...
Future pina colada lovers:
Tropical Smoothie Recipe
1 cup of fresh or canned pineapple
1 ripe banana sliced
1/3 cup of plain or vanilla yogurt
1 cup of Vanilla flavored coconut milk (I used Silk)
1 - 2 cups of ice
Throw everything in a blender and blend 20 seconds or until smooth. Rum optional.