For optimal flavor, consider adding a pinch of cumin or chili powder to the vegetable mixture. If you prefer a spicier burrito, leave the seeds in one or both jalapenos. To reheat, microwave a frozen burrito for 2-3 minutes, or bake in a preheated oven at 350°F (175°C) for 20-25 minutes. Serve with your favorite hot sauce, salsa, or sour cream.