Rich and Simple French Onion Soup
Ingredients: ½ cup unsalted butter 2 tablespoons olive oil 4 cups sliced onions 4 (10.5 ounce) cans beef broth 2 tablespoons dry sherry 1 teaspoon dried thyme 1 pinch salt and pepper to taste 4 slices French bread 4 slices provolone cheese 2 slices Swiss cheese, diced ¼ cup grated Parmesan cheese Directions: Melt butter... » read more