Enjoy the art of presentation with a tartine—a sandwich that's a feast for the eyes and taste buds, served open-faced. Here, we slather a thick slice of good crusty whole-wheat bread with a creamy pesto-ricotta spread and top it with golden-brown sautéed mushrooms. Any tender, quick-cooking mushroom would work for this recipe. Oyster mushrooms, chanterelles and shiitake mushrooms would all be delicious. Enjoy it as is or take it to the next level by adding a poached or fried egg on top.