Potato and Leek Frittata

By Cook and a half

4.14 / 5

15min

30min

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1 tablespoon butter
2 leeks white and light-green parts thinly sliced
2 cups shredded potato
8 eggs
½ cup shredded mozzarella cheese
½ cup grated Parmesan-Reggiano cheese
salt and ground black pepper to taste