Step 1

Peel and slice 1 medium banana and add it to a quart sized zip-top bag. Add 2 cups pineapple chunks and 1/2 cup unsweetened coconut flakes. Seal the bag and freeze until solid, at least 2 hours and up to 3 months.

Step 2

When ready to eat, transfer the frozen ingredients into a blender and add 1/2 cup coconut milk. (If the frozen fruit has stuck together, lightly hit it against the counter while still in the bag to break it up before adding it to the blender.) Blend on high speed until very smooth, 30 to 60 seconds, adding more coconut milk if needed to thin it out. Pour into a tall glass and garnish with diced pineapple and unsweetened coconut flakes, if desired. Serve immediately.