Garlic Soup with Gruyère Toast Recipe

Ingredients

• 3 tablespoons unsalted butter
• 4 ½ cups chopped onion
• 1 cup sliced garlic (about 12 large cloves)
• 8 cups chicken broth
• 1 ¼ teaspoons kosher salt, divided
• ¼ teaspoon ground black pepper
• 5 large egg yolks
• 1 cup heavy whipping cream
• Fresh thyme, ground black pepper
• 14 (½-inch-thick) slices baguette
• 3 tablespoons unsalted butter, melted
• 1 large clove garlic, halved
• 1 ¾ cups shredded Gruyère cheese