cut 4 plums into quarter, removing pits. Place in a roasting pan. Drizzle with the juice of 2 limes, sprinkle 1 Tbl sugar over, then drizzle with 1 Tbl. olive oil. Sprinkle 2 Tbl. chopped fresh rosemary over the plums, laying four sprigs of fresh rosemary in among the plums. Bake at 375 until plums are soft and juices have become a thickened ruby sauce.
Remove from oven, let cool slightly. Top with a dollop of plain nonfat strained greek yogurt or better, plain Icelandic skyr (I like Siggi's skyr, which I find at Whole Foods). Drizzle with just a touch of honey.