Mix dry ingredients for dough. Add yogurt and melted butter. Spoon dough onto a heavily-floured surface. Dough will be sticky, so add a little more flour to the top of the dough. Flour hands and knead dough until smooth. Add additional flour if necessary. Roll dough into a rectangular about ½ inch thick.
For filling, spread melted butter on dough and sprinkle with cinnamon/sugar mixture. Starting from longer side, roll dough into coil and cut 2 inch pieces. Set rolls on end in a lightly greased muffin pan and bake at 425 for about 20 minutes. Let cool thoroughly before decorating.
* If a glaze is desired, mix 2 tablespoons water and ¾ cup confectioners sugar. Drizzle on rolls while hot.