French Onion Soup With Beer

Name: French Onion Soup With Beer
Prep time: 30 min
Cook time: 20 min
Total time: 50 min
Cuisine: European
Ingredients: 3 -4 large onions; 2 tablespoons butter; 2 tablespoons olive oil; salt; pepper; 2 tablespoons flour; 1/2 teaspoon herbes de provence; 1/4 teaspoon sage; 1 tablespoon garlic powder; 1 quart beef broth; 12 ounces beer; 1 chicken bouillon; 2 tablespoons Worcestershire sauce; 8 -10 slices French bread; 8 -10 slices swiss cheese; 1/4 cup parmesan cheese, grated