INGREDIENTS
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1 spray(s) cooking spray
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1 Tbsp salted butter
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1 medium uncooked onion(s), thinly sliced
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2 Tbsp all-purpose flour
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2 cup(s) fat free skim milk
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2 pound(s) uncooked Yukon gold potato(es), thinly sliced
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1 cup(s) low fat shredded cheddar cheese
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1 tsp table salt
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1/4 tsp black pepper