INGREDIENTS
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5 lb. white potatoes, peeled and cut into 1-inch pieces
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6 tbsp. unsalted butter
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1 (8 oz.) package whipped cream cheese
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2 c. white cheddar cheese, shredded
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1 c. Parmesan cheese
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8 oz. sour cream
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1 tsp. garlic salt
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Salt and pepper to taste
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Milk (for consistency)