If you’re assembling your warp to be circular shaped (like a Taco Bell Crunch Wrap) it would be a good idea to grill it to keep it all together. If you’re assembling like a normal burrito, you can choose whether or not you’d like to grill the assembled wrap. To do this, heat a skillet over medium-high heat, spray with plenty of cooking spray, and place your burrito seam side down on the pan. It should be nice and browned after just a couple of minutes and then you can turn it once to get the other side.  If you have one, you could put this wrap in a panini press for some nice grill marks. Be careful not to press down too hard and have your filling come oozing out.