Soupe à l'Oignon Gratinée
Ingredientsfor 2
450
Cal
22g
Protein
44g
Carbs
22g
Fat
- 13 lbs yellow onions, thinly sliced
- 24 tablespoons unsalted butter
- 31 tablespoon olive oil
- 41 teaspoon sugar
- 5½ cup dry sherry or white vermouth
- 64 cups beef broth
- 72 cups chicken broth
- 81 tablespoon fresh thyme
- 92 bay leaves
- 108 thick slices day-old baguette, toasted
- 112 cups Gruyère cheese, freshly grated
- 12½ cup Comté or Swiss cheese, grated
- 13Salt and black pepper to taste
Instructions
- 1
Melt butter with olive oil in a large, heavy-bottomed Dutch oven over medium-low heat. Add sliced onions, sugar, and 1 teaspoon salt. Cook, stirring every 5–10 minutes, for 45–60 minutes until the onions are deeply caramelized to a rich mahogany color and reduced to a fraction of their original volume. If they stick, add a splash of water and scrape the bottom.
- 2
Increase heat to medium-high, add the sherry, and cook until evaporated, scraping up all the caramelized bits. Add both broths, thyme, and bay leaves. Bring to a simmer and cook 20 minutes. Season with salt and pepper. Remove bay leaves.
- 3
Preheat broiler to high. Ladle soup into oven-safe crocks or bowls. Float 2 slices of toasted baguette on top of each bowl. Mound a generous amount of the mixed grated cheeses over the bread, completely covering the surface.
- 4
Place under the broiler 4 inches from heat for 3–5 minutes until the cheese is bubbling, browned, and slightly charred in spots. Serve immediately — the cheese will pull away in long strands as you dig through to the rich soup beneath.