Place all ingredients in a blender and mix until smooth.
Notes
If using a frozen banana with fresh pineapple chunks, you'll only need 4-5 ice cubes. The same goes if you're using frozen pineapple chunks with a fresh banana.
I haven't tested this using a frozen banana plus frozen pineapple chunks. I suspect the mixture would be too icy and turn out more like sorbet. You could try thawing some of the pineapple chunks in the microwave first.
Optional additions:For more protein, add two scoops of protein powder. For more fiber, add ⅓ cup of rolled oats. Or, try adding coconut rum after 5 p.m.!To Reduce Calories:Coconut is high in calories. For fewer calories, you can reduce the amount of coconut flakes and add coconut extract for flavor.How to clean and cut a pineappleIf starting with a fresh, whole pineapple, twist off the green top and discard. Trim off the ends with a sharp knife and stand up the pineapple. Starting at the top, trim off the skin a section at a time by making downward slices.Trim off any hard parts and use a small knife to pick out the seeds. Discard the skin and seeds and rinse your cutting board. Rinse your knife and pineapple and pat dry.Stand up the pineapple, and starting to the right of the core, slice downward. Rotate the pineapple and continue slicing downward around the core. Discard the core and cut the remaining pineapple into chunks.