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• 1 1/2 lb. new or small potatoes
• 1/4 c. butter, melted
• 1/4 c. extra-virgin olive oil
• 3 cloves garlic, minced
• kosher salt
• Freshly ground black pepper
• 1 c. shredded mozzarella
• 1/2 c. freshly grated Parmesan
• 1/4 c. finely chopped parsley