ROASTED BALSAMIC SWEET POTATOES  ¼ c. balsamic vinegar  1 Tbsp brown sugar  ¼ c butter  1 tsp salt  3-4 lrg sweet potatoes peeled &amp; chopped into ¼” cubes   Heat oven to 400. In large skillet bring vinegar and sugar to a boil. Reduce till sauce thickens. Add butter and salt. Over medium heat mix till even. Place potatoes in pan and toss with sauce. Spread mixture into a baking pan and roast stirring occasionally till potatoes are slightly browned on edges, about 40 minutes. Serve immediately.