Slow Cooker French Onion Soup
Description
This slow cooker French onion soup is simmered until richly flavored, topped with toasted bread and a blend of cheeses, then broiled until bubbly.
Ingredients
•
6 tablespoons butter
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4 large yellow onions, sliced and separated into rings
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1 tablespoon white sugar
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2 cloves garlic, minced
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1/2 cup cooking sherry
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7 cups reduced-sodium beef broth
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1 teaspoon sea salt, or to taste
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1/4 teaspoon dried thyme
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1 bay leaf
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8 slices of French bread
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1/2 cup shredded Gruyere cheese
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1/3 cup shredded Emmental cheese
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1/4 cup freshly shredded Parmesan cheese
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2 tablespoons shredded mozzarella cheese
Directions
1
Gather all ingredients.
2
Heat butter in a large, heavy pot over medium-high heat. Add onions; cook and stir until translucent, about 10 minutes.
3
Sprinkle onions with sugar; reduce heat to medium. Cook, stirring constantly, until onions are soft and caramelized, at least 30 minutes. Stir in garlic and cook until fragrant, about 1 minute.
4
Stir sherry into onion mixture; scrape the bottom to dissolve the small bits of browned food.
5
Transfer onions into a slow cooker and pour in beef broth. Season with sea salt; stir in thyme and bay leaf.
6
Cover and cook on Low for 8 to 10 hours or on High for 4 to 6 hours.
7
Preheat the oven broiler about 10 minutes before serving. Set an oven rack about 8 inches from the heat source. Arrange bread slices on a baking sheet; broil until toasted, 1 to 2 minutes per side.
8
Lightly toss Gruyere, Emmental, Parmesan, and mozzarella cheeses in a bowl.
9
Fill oven-safe soup crocks 3/4 full with onion soup and float a bread slice in each bowl.
10
Top each with about 2 tablespoons cheese mixture.
11
Place filled bowls onto a baking sheet and broil until cheese topping is lightly browned and bubbling, about 2 minutes.