Best French Onion Soup Recipe-How To Make French Onion Soup—Delish.com

Ingredients

• 3 tbsp. butter
• 1 tbsp. extra-virgin olive oil
• 3 large onions, thinly sliced
• 2 sprigs thyme
• 1 bay leaf
• Kosher salt
• Freshly ground black pepper
• 3 cloves garlic, minced
• 3 tbsp. all-purpose flour
• 1/4 c. red wine
• 4 c. low-sodium beef broth
• 2 boules
• 2 c. shredded Gruyere
• Freshly chopped parsley, for garnish