This thread might help: http://food52.com/hotline/3379-weird-question-about-black-bean-burritos-in-bulk-my-11-year-old-son-loves-a-specific-flavor-brand-of
We heat ours in the microwave for about a minute and then toast in a pan (covered at first) until crispy and heated through. I can't say our 4 year old requires that extra browning step, but we think it makes all the difference.
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