01 - Transfer Aperol, prosecco, orange juice, vodka if using, simple syrup, and ice cubes into a high-powered blender.
02 - Process mixture on high speed until consistency is uniform and slushy.
03 - Sample the mixture and incorporate additional simple syrup as desired for preferred sweetness.
04 - Pour frozen mixture into pre-chilled glasses and adorn each serving with a slice of fresh orange.
05 - Serve promptly while at optimal frozen texture.