INGREDIENTS
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4 large russet potatoes, each about 3/4 pound each, well scrubbed
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1/2 pound broccoli florets, blanched
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4 tablespoons softened butter
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1/2 cup sour cream
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1/2 cup shredded sharp Cheddar, plus extra for topping
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1/2 cup shredded smoked Gouda, plus extra for topping
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Salt and freshly ground black pepper
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Butter, for serving, optional