INGREDIENTS
1/4 cup
salted butter
1 medium
yellow onion
8 oz
cremini mushrooms
3/4 tsp
table salt
1/4 cup
flour
2 cups
whole milk
1 cup
chicken broth
8 oz
pasta shells
6 7/10 oz
tuna in olive oil
2 tbsp
fresh flat-leaf parsley
1/4 tsp
black pepper
1 cup
sharp cheddar cheese
1 1/2 cups
potato chips