This delicious beefy French onion soup recipe is easy to throw together with any inexpensive beef you might have found on sale or already have in your freezer. Be sure to thaw frozen beef before beginning the recipe. I prefer to use Vidalia or other sweet onions, but any large, yellow onions will do.
Those who don't follow a low carb eating plan can add some French bread or croutons prior to sprinkling the cheese at the end, for a more traditional French onion soup.
In place of the beef broth, I use concentrated beef stock purchased from BJ's and mixed with water. You can find concentrated beef stock in a jar in the soup section of most grocery stores. I find it easier to keep a small jar of beef stock on hand than to regularly buy cans of broth.