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Cozy Crockpot French Onion Soup Recipe with Easy Gruyère Toast

crockpot French onion soup - featured image
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A comforting and easy crockpot French onion soup with slow-caramelized onions and melty Gruyère toast, perfect for busy days or cozy nights.

Ingredients

Scale
  • 4 large yellow onions, thinly sliced
  • 3 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 3 garlic cloves, minced
  • 6 cups beef broth (low-sodium preferred)
  • 1/2 cup dry white wine (optional)
  • 1 teaspoon dried thyme
  • 1 bay leaf
  • Salt and freshly ground black pepper, to taste
  • 8 baguette slices (day-old bread works best)
  • 1 1/2 cups shredded Gruyère cheese

Instructions

  1. Peel and slice about 4 large yellow onions into thin strips, aiming for uniform slices (about 15 minutes).
  2. In a large skillet over medium heat, melt 3 tablespoons unsalted butter with 1 tablespoon olive oil. Add sliced onions and cook, stirring occasionally, until deep golden brown and caramelized, about 30-40 minutes. Lower heat if onions stick or brown too fast.
  3. Stir in 3 minced garlic cloves and cook for another 1-2 minutes until fragrant.
  4. Transfer caramelized onions and garlic to the crockpot.
  5. Pour in 6 cups beef broth and 1/2 cup dry white wine (if using). Add 1 teaspoon dried thyme and 1 bay leaf. Season lightly with salt and pepper.
  6. Cover and cook on low for 6-8 hours or high for 3-4 hours.
  7. About 15 minutes before serving, preheat oven broiler. Arrange baguette slices on a baking sheet, top with shredded Gruyère cheese, and broil until bubbly and golden, about 2-3 minutes.
  8. Remove soup from crockpot, discard bay leaf, taste and adjust salt and pepper as needed.
  9. Ladle hot soup into oven-safe bowls, top with Gruyère toast slices, and optionally broil for 1-2 minutes to marry toast and soup.

Notes

If crockpot runs hot, check soup midway to avoid over-reducing. Stir onions every 5-10 minutes during caramelization to prevent burning. Use day-old baguette for best toast texture. Substitute vegetable broth and omit wine for vegetarian version. Gruyère can be swapped with Swiss or Emmental cheese. Broil cheese toast carefully to avoid burning.

Nutrition

Keywords: French onion soup, crockpot soup, slow cooker soup, Gruyère toast, comfort food, easy soup recipe, caramelized onions

Find it online: https://katedishes.com/cozy-crockpot-french-onion-soup-recipe-with-easy-gruy-e-re-toast/