Slow Cooker Onion Soup

Details

Ingredients

• ¼ cup butter, melted
• 1 large sweet onion (such as Vidalia®), cut into thin slivers
• 1 small red onion, cut into thin slivers
• 2 cloves garlic, minced
• 4 cups beef stock
• 3 tablespoons brandy
• 2 teaspoons soy sauce
• 2 teaspoons Worcestershire sauce
• salt and ground black pepper to taste
• 2 cups Italian-style seasoned croutons
• 3 slices provolone cheese