"We have been trying French onion soup in restaurants for years and my family and friends agree none can compare to my recipe for taste and simplicity of preparation."

• 2 tablespoons olive oil
• 1/2 cup unsalted butter
• 4 slices provolone cheese
• 1 teaspoon dried thyme
• 2 tablespoons dry sherry (optional)
• 1/4 cup grated Parmesan cheese
• 2 slices Swiss cheese, diced
• salt and pepper to taste
• 4 slices French bread
• 4 cups sliced onions
• 4 (10.5 ounce) cans beef broth