French Onion Soup Casserole

This cozy casserole turns the rich flavors of French onion soup into a cheesy, baked comfort dish topped with toasted bread and melty cheese.

Ingredients

• 3 large onions, thinly sliced
• 3 tablespoons butter
• 1 tablespoon olive oil
• 1 teaspoon sugar
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 1 teaspoon thyme (fresh or dried)
• 3 cups beef broth
• 1 tablespoon Worcestershire sauce
• 8 slices of French bread, toasted
• 2 cups shredded Gruyère or mozzarella cheese

Instructions

1. Caramelize the onions: In a large pan, melt butter with olive oil over medium heat. Add onions, sugar, salt, pepper, and thyme. Cook slowly, stirring often, for 25–30 minutes until onions are deep golden brown.
2. Add broth: Stir in beef broth and Worcestershire sauce. Simmer for 10 minutes to blend flavors.
3. Assemble the casserole: Preheat oven to 375°F (190°C). Pour onion mixture into a baking dish. Arrange toasted bread slices on top.
4. Add cheese: Sprinkle generously with Gruyère or mozzarella cheese.
5. Bake: Bake uncovered for 20 minutes or until bubbly and golden brown.
6. Serve: Garnish with chopped chives or parsley. Serve hot and enjoy!

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