Tennessee Onions

Bahan-bahan (8 porsi)

• 3 pounds sweet onions, (peeled and sliced ⅛ to ¼-inch thick)
• 2 tablespoons salted butter, (melted)
• 2 teaspoons brown sugar
• 1 teaspoon garlic powder
• 1 teaspoon smoked paprika
• 1 teaspoon salt
• ¼ teaspoon freshly ground black pepper
• ¼ teaspoon ground cayenne pepper
• 2 cups shredded sharp cheddar cheese
• 2 cups shredded Gruyere cheese
• 4 tablespoons salted butter, (cut into small pieces)