Fantastic recipe! Saw a neighbor bring this to a block party, and everyone went bonkers for it!

This French Onion Soup Casserole is a comforting and flavorful dish, perfect for a cozy weeknight dinner. It captures the essence of French onion soup in a casserole form, with caramelized onions cooked in a rich broth and topped with melted Gruyère and Parmesan cheese.

Ingredients:

Instructions:

1. Preheat your oven to 400°F (200°C) and prepare a 9×13 inch baking dish with cooking spray.
2. In a large pan over medium heat, melt the butter and caramelize the sliced onions until soft, sweet, and golden brown. This takes about 15 minutes, so be patient! Stir occasionally for even browning.
3. Add the minced garlic, salt, pepper, and thyme to the onions and cook for another minute.
4. Sprinkle the flour over the onions and cook for a couple of minutes to get rid of the raw flour taste. Then, pour in the white wine and simmer until the liquid reduces slightly.
5. Add both beef and chicken broths to the pan and bring everything to a simmer. Let it simmer for another 10 minutes, allowing the flavors to meld.
6. Now it’s time to assemble the casserole! Pour half of the onion mixture into the baking dish. Layer half of the toasted bread slices on top, then sprinkle with half of the Gruyère and Parmesan cheeses. Repeat these layers with the remaining ingredients.
7. Bake the casserole uncovered for 20-25 minutes, or until the cheese is bubbly and beautifully browned on the edges.
8. Let the casserole sit for a few minutes before serving to allow it to set. Garnish with fresh chopped parsley for a touch of color and enjoy!