This is the perfect way to use up small amounts of leftover vegetables, rotisserie chicken, or ham — add them with the peas and carrots. No day-old rice? Spread freshly cooked rice on a sheet pan and refrigerate, uncovered, for 30 minutes to dry it out before frying. Freeze extra portions in flat bags for a fast future meal — just reheat in a hot skillet, not the microwave, to keep the texture.