01 - Place milk, ice cubes, vanilla ice cream, vanilla bean seeds or extract, and sugar in a blender container.
02 - Blend on high speed until completely smooth and creamy, approximately 1-2 minutes.
03 - Taste the blended beverage and add additional sugar if desired. Blend briefly to incorporate.
04 - Distribute the frappuccino evenly between two tall glasses. Top with whipped cream if using and serve immediately with straws.