Ingredients
Scale
- 4 large yellow onions, thinly sliced
- 4 tablespoons unsalted butter
- 2 cups low-sodium beef broth
- 4 cups stale sourdough bread, cubed
- 2 cups Gruyère cheese, shredded
- 1 tablespoon fresh thyme leaves
- Salt and pepper to taste
Instructions
- Caramelize the onions: Melt butter in a skillet over medium heat. Add sliced onions and cook for 15-20 minutes until golden brown.
- Add broth and seasoning: Stir in beef broth, thyme, salt, and pepper; simmer for 5-10 minutes until slightly reduced.
- Preheat oven to 350°F (175°C) and grease a baking dish.
- Layer ingredients: Place half of the sourdough bread in the dish, followed by half of the onion mixture and half of the Gruyère cheese. Repeat layers.
- Bake: Top with remaining cheese and bake for 25-30 minutes until bubbly and golden brown. Let cool slightly before serving.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Main
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 1 cup (240g)
- Calories: 450
- Sugar: 8g
- Sodium: 850mg
- Fat: 22g
- Saturated Fat: 12g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 48g
- Fiber: 4g
- Protein: 14g
- Cholesterol: 55mg