Preheat the oven to 375°F (190°C).

In a large skillet over medium heat, add the ground beef. Cook until browned, breaking it apart as it cooks. Drain excess fat.

Stir in taco seasoning and water according to package instructions. Simmer for about 5 minutes until thickened.

Roll out the crescent roll dough and separate into triangles.

Place a spoonful of the seasoned beef on the wide end of each triangle and top with cheeses and optional chilies.

Roll the dough around the filling and pinch edges to seal.

Beat the egg in a small bowl and brush over the tops of the rolled taco sticks.

Bake for 12-15 minutes until puffed and golden brown.

Let cool slightly before serving with salsa, sour cream, and cilantro.