Bananas make an unexpectedly delicious filling--and garnish--for this sweet version of focaccia. Use firm but ripe bananas so the slices hold their shape during baking. The slices are sprinkled with ground cinnamon and brown sugar for added flavor. The dough itself is also a bit out of the ordinary, with yogurt added along with the olive oil to the yeast mixture and dry ingredients. Serve warm, dusted with confectioners' sugar, as the finale to an Italian-style meal.