French Onion Soup Gratinée

Ingredients

• 2 tablespoons unsalted butter
• 2 pounds onions, thinly sliced
• 1 quart beef stock
• 2 tablespoons flour
• Salt and pepper to taste
• 4 ounces Gruyere cheese, finely grated
• 1 ounce Parmesan cheese, finely grated
• 2 French bread, cut into thick slices

Directions

1. Melt butter in a large sauté pan over low heat.
2. Sauté onions until brown and caramelized, stirring occasionally, approximately 10 minutes.
3. Sprinkle onion with flour and stir until onions are coated, about 2 minutes.
4. Add stock and simmer for 30 minutes. Season with salt and pepper.
5. Heat broiler.
6. Toast the bread slices until lightly browned.
7. Pour soup into a serving crock or bowl, top with bread and sprinkle cheese liberally over bread.
8. Place bowl under broiler until cheese is melted and bubbly. Serve.