Restaurant-Style French Onion Soup
- Category: French Onion Soup
- Author: Jenny
- Rating: 4.81
- Prep time: 20 min
- Cook time: 75 min
Ingredients
- ½ cup butter
- 8 onions, sliced
- 2 cloves garlic, crushed
- ½ teaspoon salt, or to taste
- ½ teaspoon ground black pepper, or to taste
- 1 teaspoon dried thyme
- 1 cup red wine
- 1 tablespoon sherry
- 2 tablespoons all-purpose flour
- 2 quarts beef broth
- 1 French baguette, cut into 1/2-inch thick slices
- olive oil, or as needed
- 6 slices Swiss cheese
- 6 slices provolone cheese
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