INGREDIENTS
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2 cups mashed potatoes
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3 large eggs, beaten
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1 cup grated Cheddar cheese
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1/2 cup Parmesan
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1/2 teaspoon garlic powder
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1 teaspoon basil
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1 teaspoon oregano
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2 tablespoons sour cream plus more for garnish
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Salt and freshly ground pepper
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Sliced scallions