Slow cooker French onion soup - Alabama Farmers Federation

Ingredients

• 6 tablespoons butter
• 4 large yellow onions, sliced and separated into rings
• 1 tablespoon white sugar
• 2 cloves garlic, minced
• ½ cup cooking sherry or dry white wine
• 7 cups beef broth (or use beef bouillon cubes)
• 1 teaspoon salt
• ¼ teaspoon dried thyme
• 1 bay leaf
• Sliced French bread
• ½ cup shredded Gruyere or Swiss cheese
• 1/3 cup shredded Emmental or Swiss cheese
• ¼ cup shredded Parmesan cheese
• 2 tablespoons shredded mozzarella cheese