If you've mashed your sweet potatoes with, say, bacon and chipotles, skip this recipe (and invite me over). But sweet potatoes made with butter, maple syrup, or even marshmallows will work beautifully in this, as will any type of sweet cranberry sauce. Note. Sweet potatoes are a good source of vitamin C, which has anti-inflammatory properties. Studies have shown that young children with asthma experience significantly less wheezing when they eat fruits rich in vitamin C.