Ingredients

• 4 large russet potatoes, peeled and sliced into thin rounds
• 1 cup heavy cream
• 1/2 cup whole milk
• 1/2 cup grated Parmesan cheese
• 1/2 cup grated Gruyere cheese
• 2 cloves garlic, minced
• 2 tablespoons unsalted butter
• 1 teaspoon dried thyme
• Salt and black pepper to taste
• Chopped fresh parsley (for garnish)