French Onion Soup

Ingredients
2 tablespoons
olive oil
2 tablespoons
unsalted butter
3 pounds
yellow onions
1 teaspoon
salt
1/2 teaspoon
black pepper
3 tablespoons
all purpose flour
1 tablespoon
fresh thyme leaves
8 cups
beef broth
2 tablespoons
red wine vinegar
8 slices
French bread
1 1/2 cup
freshly grated Gruyere
Instructions
1
Increase the heat to medium-high and continue to cook the onions until they are deeply caramelized, about 25-35 more minutes. If needed, you can add a little bit of water to the pan as the onions cook if they are sticking to the pan.
2
Add flour and thyme and stir until the flour is no longer visible.
3
Add beef broth and red wine vinegar and bring to a boil. Reduce heat to a simmer and cook uncovered until thickened, about 20 minutes.
4
When ready to serve, preheat the broiler. Divide the soup into broiler-safe serving bowls (about 2 cups of soup per person), then top each with a slice of bread. Divide the cheese evenly on top of each bowl of soup, then broil for 1 to 2 minutes, or until the cheese is bubbly and brown. Keep a close eye on this process as every broiler is different!
Notes
Nutrition Facts
(per serving)
Calories:
466 calories
Servings:
6 servings
Carbohydrates:
38 g
Fat:
34 g
Fiber:
2 g
Protein:
13 g
Sugar:
2 g
Meal Effort
Preparation:
20 minutes
Cook:
1 hrs 25 mins
Total:
1 hrs 45 mins