INGREDIENTS
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1/4 cup butter, plus more for dish
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1 onion, chopped
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1 (16 oz) container sour cream
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1 (10.5 oz) can cream of celery soup
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1 (8 oz) package cheddar and Monterey Jack cheese blend, shredded
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1/2 teaspoon garlic powder
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1 (30 oz) package frozen shredded hash brown potatoes, thawed
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1 teaspoon salt
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1/2 teaspoon black pepper
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2 cups potato chips, crushed