Only in a real pinch. At the first bite my brain said "There is something seriously wrong here."
If you have had Burrito Boyz or any of the more serious downtown burritos, this place is really really pale by comparison. At BB it takes 15m to prepare an item. That's because they cook basically to order. And you get this hot filling + cool garnishes. It all works. And look at the BB kitchen - there is usually a pile of whole tomatoes waiting to be chopped.
Here it felt mushy and tasted floury. Of course what did I expect, they serve it basically cold with premade fillings just ladled out. Yes the ingredients seemed fresh enough, but it just doesn't work altogether. I expect garnishes here are poured out of containers from head office. This is chain food gone amok.
(To the one reviewer who said "OMG...the most delish burritos in Leaside. " Well, that is not saying much. Leaside is not known for their discriminating taste in Burritos.)
and it got very expensive. At BB you can get out of there for $6 to $8 pp and guac is standard. at MB, guac is extra and you come in at about... $12 pp.
Again, only if you are absolutely stuck.