Golden Onion Soup

Total Time: 1 hr Preparation Time: 30 mins Cook Time: 30 mins

Ingredients

• 2 tablespoons unsalted butter
• 2 tablespoons olive oil
• 1 1/2 lbs onions, sliced
• 1/2 lb red onion, sliced
• kosher salt
• pepper
• 1 tablespoon all-purpose flour
• 2 tablespoons balsamic vinegar
• 1 cup dry wine
• 6 sprigs fresh thyme, plus more for serving
• 2 cups low sodium beef broth
• 2 ounces gruyere or 1/2 cup gruyere, grated

Recipe

• 1 heat butter and oil in a large pot over medium heat. add onions, season with 1/2 teaspoon each salt and pepper, and cook, covered, stirring occasionaly, until very tender, 12 to 15 minutes.
• 2 reduce heat to medium-low and cook, uncovered, stirring occasionally, until onions are golden brown, 20 to 25 minutes.
• 3 sprinkle with flour and cook for 2 minutes; stir in vinegar.
• 4 add wine and simmer for 3 minutes. add thyme, broth, and 4 cups water and bring to a boil. reduce heat and simmer for 10 minutes. spoon soup into bowls and sprinkle with cheese and aditional thyme, if desired.
• 5 tips & techniques.
• 6 make-ahead tip: freeze the soup (without cheese) for up to 3 months. thaw in the fridge overnight. reheat, covered, in a saucepan over medium heat. top with chese and additional thyme before serving, if desired.