If stored in an airtight container and kept in the fridge, any leftover Ground Beef with Rice will last for up to 4 days. To reheat, simply do so in a skillet or a microwave adding a splash of water or sesame oil if needed to alleviate the stickiness of the rice. You can also freeze the flavourful Ground Beef portion of this meal for up to 3 months so all you have to do is thaw, reheat and add rice when ready to eat!