Remove the burrito from the foil and place it on a microwave-safe plate. Microwave on the DEFROST setting for 7 minutes. Flip the burrito over, and repeat for another 7 minutes. (Since all microwaves are different, defrosting time may vary. After the two 7-minute increments, you may need another 5 minutes. Just be sure to keep it on the DEFROST setting for every round.) Place the burrito in a nonstick skillet over medium heat, and cook for about 3 minutes per side, or until it starts to slightly crisp up. This method evenly warms the fillings while also giving you a golden, crisp tortilla.