Easiest Way to Make Perfect French Onion & Beef Soup

French Onion & Beef Soup.

You can have French Onion & Beef Soup using 15 ingredients and 4 steps. Here is how you achieve that.

Ingredients of French Onion & Beef Soup

1. Prepare 1 of Large (2 lb.) London Broil.
2. You need 3 of Yellow Onions.
3. Prepare 3 of Sweet Onions.
4. It's 2 of Red Onions.
5. You need 2 of Shallots.
6. Prepare 4 oz. of Sliced Mushrooms.
7. Prepare 64 oz. of Beef Stock.
8. It's 1/2 Cup of Marsala Cooking Wine.
9. You need 1 Tbsp of Garlic minced.
10. You need 4-5 of Bay Leaves.
11. You need 6 Tbsp of Butter.
12. It's of Olive Oil.
13. It's of Gruyere Cheese (or Aged Swiss).
14. It's of Parmesan Cheese.
15. You need 1 of Baguette.

French Onion & Beef Soup instructions

1. Slow cook (Crockpot) London Broil in 64 oz. Beef Stock until fall apart tender. Pull beef in broth..
2. Sauté Onions in butter and generous amount of Olive Oil and Marsala Wine until browned, soft and translucent. 45-60 minutes. Add Garlic & Mushrooms and stir. Add Bay Leaves and simmer for 30 minutes..
3. Remove Bay Leaves. Add Beef and broth. Stir well to mix onion mixture, beef and broth..
4. Fill ceramic Crocks with soup. Place toasted cuts of baguette over soup, top with generous portions of gruyere and finish with sprinkles of Parmesan. Toast under broiler until cheese is bubbling and golden..