Prepare the Blender:
Add the milk, ice, heavy cream (if using), sugar, vanilla bean paste, and vanilla extract into the blender.
Blend:
Blend on high speed until the mixture is smooth and creamy. If the consistency is too thick, add a splash of milk. If it’s too thin, add a bit more ice and blend again.
Taste and Adjust:
Taste the mixture and adjust sweetness by adding more sugar if desired. Blend briefly to combine.
Serve:
Pour the frappuccino into a glass. Top with a generous swirl of whipped cream if desired.
Garnish (Optional):
Sprinkle with vanilla bean specks, crushed vanilla wafers, or white chocolate shavings for an extra touch.