This one will be showing up regularly on our menu. I had flour tortillas on hand and used those. They got a little gummy, but they were fine. If I use flour tortillas again, I'll try toasting them first to remove some moisture. Also, if you use flour tortillas, stick them a few times with a fork to prevent bubbles. The corn tortillas, as called for, would be better. I used fire-roasted tomatoes; a good choice. Using what was on hand, I mixed Monterey Jack and Cheddar, which I'll do from now on.