Slice starfruit crosswise into 1/4-inch stars, reserving one slice per glass for garnish. Tip: Trim off the brown edges of the starfruit for best texture.

In a blender, combine sliced starfruit, coconut cream, ice cream, ice cubes, and sweetener (if using). Tip: For a thicker shake, use frozen coconut cream.

Blend on high until completely smooth, about 45 seconds. Tip: Stop and scrape down sides if needed.

Pour into chilled glasses and garnish with starfruit slices and toasted coconut. Tip: Chill glasses in freezer for 5 minutes first for frosty presentation.