03If the frittata is still runny on the top, wearing oven mitts, slide the frittata out onto a plate or even better, a saucepan lid that has a handle, reverse the pan over the plate or lid, and holding the two together, flip the plate or lid so that the frittata goes back into the pan on its not-quite-cooked side. Finish for no longer than a minute, then reverse onto a platter. Allow to cool to room temperature, and serve, or chill. Cut into 4 wedges to serve. The wedges pack well and are very portable.