Onion beef soup

I love French Onion soup and found this easy recipe.

2 c thinly sliced onions (I chopped mine in a food processor)
1T butter or fat of choice to fry onions
2C. cooked hamburger or beef crumbled or cut small
3T flour (or mashed potato flakes to thicken a bit)
1t mustard
1T honey, sugar or sweetener

cook onions in butter over medium low heat for 15 to 20 min until tender and golden brown.    Stir occasionally.  Add beef and broth, bring to a boil, cover and simmer for 10 min.

in a small bowl combine flour and sugar and stir into soup add mustard,. bring to a boil, cook and stir 1-2 min till slightly thickened.  4-5 servings