Sweet potato macaroni cheese

I'll admit straight away that although I like it, I am not generally the biggest fan of macaroni and cheese as I generally find it to be too heavy. That said, I was intrigued enough to give this recipe a try for the interesting combination of sweet potatoes and feta cheese in the mix. Although this, like other mac and cheeses, was rather heavy and a big laggy, the contrast of the sharp feta to the sweet potatoes was very good and there was an overall more creaminess to the texture which I liked. I think it could have used a bit more English mustard or paprika (or a bit more of both) as it still felt a little lacking in taste, but still was quite enjoyable. It also made for a hefty amount of leftovers for lunch the next couple of days and was quite good eaten cold.