The Kitchn: This cheesy ranch potato gratin is a fresh twist on the classic casserole
2 tablespoons unsalted butter
4 pounds large russet potatoes
6 ounces dill havarti cheese
2 ounces Parmesan cheese
4 cloves garlic
1 medium lemon
2 tablespoons finely chopped fresh chives
2 tablespoons finely chopped fresh dill
1 tablespoon finely chopped fresh parsley leaves
2 cups heavy cream
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