public void Update()
    {
        //Get the Screen positions of the object
        Vector2 positionOnScreen = Camera.main.WorldToViewportPoint(transform.position);

        //Get the Screen position of the mouse
        Vector2 mouseOnScreen = (Vector2)Camera.main.ScreenToViewportPoint(Input.mousePosition);

        //Get the angle between the points
        float angle = AngleBetweenTwoPoints(positionOnScreen, mouseOnScreen);

        //Ta Daaa
        transform.rotation = Quaternion.Euler(new Vector3(0f, 0f, angle));
    }
    
    float AngleBetweenTwoPoints(Vector3 a, Vector3 b)
    {
        return Mathf.Atan2(a.y - b.y, a.x - b.x) * Mathf.Rad2Deg;
    }