Ingredients
Scale
- 4 large yellow onions (about 3 pounds), thinly sliced
- 4 tablespoons unsalted butter
- 1 tablespoon kosher salt (use less if using table salt)
- 1/4 teaspoon cayenne pepper (optional)
- 2 tablespoons all-purpose flour
- 1/2 cup sherry or white wine
- 1 tablespoon fresh lemon juice (about half a lemon)
- 8 cups high-quality beef broth
- 2 cups water
- 1 tablespoon Better Than Bouillon Beef Base
- 3 medium carrots, peeled and roughly chopped
- 1 yellow onion, roughly chopped
- 2 stalks celery, roughly chopped
- 6 large cloves garlic, smashed
- 1 teaspoon prepared horseradish
- 3 sprigs fresh thyme (or 1/2 teaspoon dried thyme)
- 3 small sprigs fresh rosemary (or 1/2 teaspoon dried rosemary)
- 3 bay leaves
- 15 whole black peppercorns (about 1/2 teaspoon)
- 1 (1-pound) loaf of French bread, sliced
- 1 cup gruyere cheese, freshly grated
- 1 cup Parmesan cheese, freshly grated
- 8 ounces Swiss cheese, sliced
- Fresh chives, for garnish
- Cracked black pepper, for garnish
Instructions
- Slice the onions and caramelize in butter with salt and optional cayenne.
- Combine beef broth, water, Better Than Bouillon, and vegetables in a pot.
- Simmer the broth while the onions caramelize.
- Drain the broth, return it to the pot, and discard the vegetables.
- Stir flour into the caramelized onions, add sherry and lemon juice, and combine with the broth.
- Toast the French bread slices and prepare for assembly.
- Layer cheese in oven-safe bowls, add soup, top with bread and cheese, then broil until bubbly.
Notes
Allow onions to caramelize slowly for best flavor.
Use high-quality broth for enhanced taste.
Adjust seasoning according to your preference.
- Prep Time: 20 minutes
- Cook Time: 2 hours
- Category: Soup
- Method: Stovetop
- Cuisine: French
Nutrition
- Calories: 450
- Sugar: 5g
- Sodium: 1200mg
- Fat: 20g
- Saturated Fat: 10g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 40g
- Fiber: 3g
- Protein: 18g
- Cholesterol: 50mg