Slow Cooker French Onion Soup

Ingredients

3 pounds yellow onions, peeled and sliced
2 tablespoons olive oil
1 teaspoon salt, plus more to taste
Freshly ground black pepper
2 tablespoons balsamic vinegar
10 cups beef bone broth or beef broth
3 tablespoons Sherry, optional
For assembling the soup:
6 baguette slices for each bowl
1 1/3 to 2 cups grated or shaved Gruyere cheese
Chopped parsley for garnishing

Preparation

1
Place onions in a 6-quart slow cooker. Stir in butter and olive oil. Season with salt and pepper. Cover and cook on low for 12 hours.
2
Add balsamic vinegar and beef bone broth into the slow cooker. Add Sherry if using.
3
Cover and cook on low for another 6-8 hours.
4
Preheat oven to 350°F.
5
Portion and ladle the soup and onions into oven-safe bowls and place the bowls on a baking sheet.
6
Top each bowl with a slice of toast and a generous amount of grated or shaved Gruyere cheese.
7
Bake on a rack in the upper third of the oven for 20-30 minutes or until the cheese is melted.
8
Switch oven to broil and broil the soup for 2-3 minutes until the cheese is browned.
9
Garnish with chopped parsley and serve warm.
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About

Let this healthy, soothing slow cooker French onion soup cook itself while you’re busy with other things. Make it with bone broth for a boost of collagen.

Yield:

6 servings

Added:

Friday, June 23, 2017 - 4:32am

Creator:

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