Any fans of the Olive Garden out there? If your favorite dish is Fettuccine Alfredo, you may want to pause and check the calorie count. According to some researchers, it may be the most unhealthiest dish on the menu. So, to continue to get your fix of Alfredo sauce just use the recipe listed within this blog post. The recipe for lower-calorie Alfredo sauce is from popular T.V. chef Rachael Ray.