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Classic Homemade Onion Soup Recipe

Classic Homemade Onion Soup Recipe

Classic Homemade Onion Soup is a rich, comforting dish featuring slowly caramelized yellow onions, savory beef or vegetable broth, and a golden melted Gruyère cheese topping. Perfect as a hearty starter or soul-soothing meal, it combines deep authentic flavors with simple pantry ingredients for an elegant yet rustic experience suitable for any occasion.

  • Total Time: 1 hour 30 minutes
  • Yield: 6 servings 1x

Ingredients

Scale

Main Ingredients

  • 6 large yellow onions, thinly sliced
  • 4 tablespoons butter
  • 1 cup dry white wine or sherry
  • 6 cups beef or vegetable broth
  • 2–3 sprigs fresh thyme
  • Salt and freshly ground black pepper, to taste

Toppings

  • 1 French baguette, sliced into rounds
  • 8 ounces Gruyère cheese, grated

Optional Additions

  • Fresh parsley or chives, chopped (for garnish)
  • Herb variations: rosemary or bay leaves (optional)

Instructions

  1. Slowly Caramelize the Onions: Thinly slice the yellow onions. Melt butter in a large pot over low to medium heat. Add the onions and cook, stirring frequently, until they are deep golden caramel color and soft, about 45 minutes. This slow process brings out natural sweetness and rich flavor.
  2. Deglaze with Wine: Pour in the dry white wine or sherry to the caramelized onions. Allow it to simmer until the alcohol evaporates and the liquid reduces slightly, scraping the bottom of the pot to loosen any browned bits for added flavor.
  3. Add Broth and Herbs: Add the beef or vegetable broth and fresh thyme sprigs to the pot. Bring to a gentle boil, then reduce heat and let simmer uncovered for 20 to 30 minutes to meld the flavors.
  4. Prepare the Bread and Cheese Topping: While the soup simmers, slice the baguette into rounds and toast them until crisp. Top each toast with a generous amount of grated Gruyère cheese. Place under a broiler or in a hot oven until the cheese melts, bubbles, and turns golden brown.
  5. Assemble and Serve: Ladle the hot soup into oven-safe bowls. Float the cheesy toast slices on top. Optionally broil briefly to create a bubbly melted cheese crust. Garnish with chopped parsley or chives and freshly cracked black pepper, then serve immediately.

Notes

  • Patience is key: Slowly caramelize onions to avoid bitterness and achieve deep flavor.
  • Use quality broth, homemade or high-quality store-bought, for best taste.
  • Slice onions thinly to ensure even cooking and soft texture.
  • Stir frequently during caramelization to prevent burning.
  • Use oven-safe bowls to broil cheese topping directly on serving dishes.
  • Author: Lina
  • Prep Time: 15 minutes
  • Cook Time: 1 hour 15 minutes
  • Category: Appetizers
  • Method: Baking
  • Cuisine: French
  • Diet: Gluten Free (if gluten-free bread/broth is used)

Nutrition

  • Serving Size: 1 bowl (approximately 1 1/2 cups soup with one cheese toast)
  • Calories: 350
  • Sugar: 8g
  • Sodium: 850mg
  • Fat: 20g
  • Saturated Fat: 12g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 30g
  • Fiber: 3g
  • Protein: 12g
  • Cholesterol: 40mg

Keywords: onion soup, classic onion soup, homemade onion soup, French onion soup, caramelized onions, comfort food, Gruyère cheese, soup appetizer