Prepare the Filling: Preheat oven to 375°F (190°C) and line a baking sheet with parchment paper. In a small bowl, mix softened cream cheese, granulated sugar, and vanilla extract until smooth.

Assemble the Rolls: Unroll the crescent dough and separate it into triangles. Spread a thin layer of the cream cheese mixture onto each triangle. Evenly distribute the blueberries on top. Carefully roll each triangle from the wide end to the narrow tip, enclosing the filling.

Apply the Egg Wash: In a small bowl, whisk together the egg and milk. Brush the tops of the rolls with the egg wash for a golden-brown finish.

Bake: Arrange the rolls on the prepared baking sheet, leaving space between them. Bake for 12-15 minutes or until golden brown.

Prepare the Glaze: In a small bowl, whisk together powdered sugar, milk, and vanilla extract until smooth.

Serve: Drizzle the warm rolls with the glaze before serving. Enjoy fresh and warm!