Ingredients:
3 tablespoons unsalted butter
3 large sweet onions, thinly sliced
2 cloves garlic, minced
Salt and pepper to taste
1 teaspoon thyme (fresh or dried)
2 tablespoons all-purpose flour
1/2 cup dry white wine
2 cups beef broth
1 cup chicken broth
6 slices day-old French bread or baguette, toasted
1 1/2 cups grated Gruyère cheese
1/2 cup grated Parmesan cheese
1/4 cup fresh parsley, chopped (for garnish)
Cooking spray
Directions:
-Preheat the oven to 400°F (200°C). Spray a 9×13 inch baking dish with cooking spray.
-Melt butter in a large pan over medium heat. Add onions and cook until soft, sweet, and golden brown (about 15 minutes). Add garlic, salt, pepper, and thyme; cook for 1 more minute.
-Sprinkle flour over the onions, cook for a couple of minutes, then pour in the wine. Let it simmer until the liquid reduces slightly. Add both broths and bring to a simmer for 10 minutes.
-Pour half the onion mixture into the baking dish. Layer half the toasted bread slices, then sprinkle with half of the Gruyère and Parmesan. Repeat with the remaining ingredients.
-Bake uncovered for 20-25 minutes, or until the cheese is bubbly and browned at the edges.
-Let it rest for a few minutes, then garnish with fresh parsley before serving.
Variations & Tips:
For a vegetarian version, replace the beef broth with chicken or vegetable broth.
Experiment with different cheeses for new flavors.
Use gluten-free bread for a gluten-free casserole.
Prep the casserole a day ahead and refrigerate until ready to bake.
Short on time? Use store-bought caramelized onions.
This French Onion Soup Casserole is not just a meal; it’s an experience. A perfect blend of tradition and modernity, it’s sure to be a hit at your dinner table. Enjoy the cooking, and savor the delicious moments!