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