Combine all ingredients except whipped cream in blender.

Blend until smooth.

Transfer to serving glass and top with whipped cream.

Note: Xanthan Gum acts as a thickener and keeps the frappuccino from separating. It can be pricey, but it lasts a long time. You can substitute it with 1 teaspoon dry pectin or omit it all together if you're drinking it right away.