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)