Make the Mango Layer:
Add frozen mango, milk, yogurt (or ice cream), sweetener (if using), and ice to a blender.
Blend until smooth and creamy.
Pour into the bottom of your cup, filling halfway.
Place the cup in the freezer while you make the next layer (optional for clean separation).
Make the Blueberry Layer:
Rinse the blender or use a clean one.
Blend frozen blueberries, milk, yogurt (or ice cream), vanilla, and ice until smooth.
Carefully pour over the mango layer to create a colorful gradient.
Finish & Serve:
Top with whipped cream, fresh fruit, or a drizzle of honey or condensed milk.
Serve with a wide straw or spoon and enjoy immediately!