I wouldn't, I tried it once, the burrito (wrapped in foil) tasted like exhaust and burned motor oil by lunchtime and I was out a lunch.

i bought one of these. do it right the first time, and you would be surprised how often you use one of these while out wheeling. everyone else is eating sandwiches while you're chowing down warm tacos and a toasty burrito.

https://www.amazon.com/Koolatron-Heating-Classic-Construction-Lunchbox/dp/B0001MQ7A4/