Description
Cozy, restaurant-style French onion soup made easy in the slow cooker. Budget-friendly, family-approved, and perfect for fall dinners. Gooey cheese and crusty bread make this a true comfort classic!
Ingredients
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3 large white onions, sliced
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3 tablespoons butter
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2 tablespoons coconut sugar (or brown sugar, optional)
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64 ounces beef broth (reduced sodium preferred)
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1 tablespoon Worcestershire sauce
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1 clove garlic, minced
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1/3 cup dry sherry
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1 teaspoon dried thyme
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1 bay leaf
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6 slices Sourdough bread (stale or dry is best)
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3/4 cup sliced Gruyere cheese
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6 tablespoons freshly grated Parmesan cheese
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Optional: crushed red pepper for topping
Instructions
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In a large non-stick pan, cook the onions, butter, and coconut sugar over medium-low heat until golden and caramelized, about 20 minutes.
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Transfer the onions to the slow cooker. Add beef broth, Worcestershire sauce, garlic, dry sherry, dried thyme, and bay leaf.
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Cook on low for 6–8 hours.
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Remove the bay leaf, ladle soup into oven-safe bowls, and top each with a slice of stale bread.
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Layer on Gruyere and Parmesan cheeses. Broil for 2–3 minutes until the cheese is melted and browned.
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Sprinkle with crushed red pepper if desired and serve warm.
- Prep Time: 20
- Cook Time: 360
- Category: soup
- Method: slow cooker
- Cuisine: French