Pour the chilled rosé wine into the blender.
Add the ice cubes to the blender with the wine.
Secure the lid and blend on high speed until the mixture is smooth and slushy, about 30-60 seconds. You should see the ice break down into tiny pieces, and the liquid become thick and icy.
Pause the blender briefly to check the texture, scraping down the sides if necessary. The drink should be evenly icy with no large ice chunks remaining.
If desired, add more ice and blend briefly to reach your preferred slushiness.
Pour the frozen rosé slushie into chilled glasses. The texture should be thick, frosty, and visually appealing with a vibrant pink hue.