Bean Burritos. Stock freezer for single serving dinners/lunches. Wrap individually in plastic and freeze up to 3 months. To reheat: Microwave only: Remove frozen burritos from plastic wrap. Place on a microwave-safe plate, covered with a microwave-safe bowl, and defrost at high power for 3 to 4 minutes; uncover, and microwave on high, 3 to 4 minutes longer.