French Onion Soup

Name: French Onion Soup
Prep time: 15 min
Cook time: 1 h 10 min
Total time: 1 h 25 min
Cuisine: French
Ingredients: 4 tablespoons unsalted butter; 5 large yellow onions (thinly sliced); 1 teaspoon salt; 1 teaspoon granulated sugar; 2 cloves garlic (minced); 1/2 cup dry red wine ((see note)); 32 ounces low-sodium beef broth; 24 ounces low-sodium chicken broth; 1 tablespoon Worcestershire sauce; 2 sprigs fresh thyme; 1 bay leaf; 1/2 tablespoon balsamic vinegar; pinch of salt and freshly ground black pepper (to taste); 5 1-inch thick slices of French bread; 2 tablespoons olive oil; 1 & 1/2 cups shredded Gruyere Swiss cheese (room temperature); 1/4 cup shredded Mozzarella cheese (room temperature); 2 tablespoons finely grated Parmesan cheese (room temperature)

Instructions

Prep:15minCook:1h 10min

This homemade French Onion Soup recipe will knock your socks off! Made with the richest broth, perfect caramelized onions, and topped with three different types of melted cheese!Step-by-step photos can be seen below the recipe card.

Updated at: Mon, 22 Dec 2025 00:08:27 GMT