In a high-speed blender, combine your chosen milk, vanilla protein powder, sugar-free caramel sauce, frozen banana, vanilla extract, sea salt, and a handful of ice cubes. Blend on high for about 30 seconds until smooth and thick.

While the shake is blending, drizzle caramel sauce along the inner walls of your serving glass to create a caramel pattern.

Pour the creamy shake into the prepared glass, top with whipped cream, drizzle with extra caramel, and sprinkle with flaky sea salt before serving.