One of my favorite memories is from a trip my husband and I took to Louisiana. He kept making me go back to a road-side vegetable stand because he enjoyed talking to the man who staffed the stand! He was Cajun and Joe loved visiting with him. As a result, we came home with a trunk filled with bags of sweet potatoes. Not a problem ... we loved them and had a dry sun porch to store them in. My husband loved sweet potatoes two ways ... baked and loaded with butter and salt; candied the caramelized way in a cast iron skillet on top of the stove with butter and a little bit of brown sugar. I finally managed to get him to eat sweet potato fries, but not too often.
I, on the other hand, love them all ways ... pies, soups, stews. You name it and I love it ... when it includes sweet potatoes!
This pasta sauce is too easy to make! Bake a medium to large sweet potato in the microwave. Saute 1/4 cup chopped sweet onion in 1/2 stick of butter. When the onion is soft, add a little minced garlic and a good sprinkle of red pepper flakes. Remove the flesh from the sweet potato and add it to the skillet, mashing everything together. Add 3-4 cups of half and half and 1/2 cup grated parmesan cheese. Let this combination come to a simmer. It will begin to thicken. You can remove it from the heat and use an immersion blender to puree the sauce. (I actually like texture, so I just use a whisk.) If the sauce is too thick, add some of your pasta cooking water until you get the consistency you like.
This makes plenty of sauce for a pound of cooked pasta.