Creamy French Onion Casserole – Daniel Recipes

Ingredients

• 6 medium yellow onions, thinly sliced
• 2 tablespoons olive oil
• 1 tablespoon butter
• 1/4 teaspoon salt
• 1/4 teaspoon ground black pepper
• 1 teaspoon fresh thyme leaves
• 1/4 cup all-purpose flour
• 1 cup beef broth
• 1 cup heavy cream
• 1 cup shredded Swiss cheese
• 1 cup shredded Gruyère cheese
• 1/2 cup bread crumbs
• 1/4 cup grated Parmesan cheese
• 2 tablespoons melted butter