Sorry, I really don't know what else to call it. Maybe "really big nacho"? Mexican thin-crust pizza?
I made a chile sauce today from some aji mirasol chiles. Guajillos, pasillas, or cascabels would work too. Sear 4 chiles in a hot pan, then plunge in water to soften. Cook 2 cloves of garlic in their skins over a medium-hot skillet. Drain the chiles, and remove most of the seeds. Chop and mash the chiles until you get a very fine paste (or use a blender), add the de-skinned garlic, some oregano, salt, tomato paste (or sauce), and water. If it's too spicy, add more tomato/water.
Spread a corn tortilla with a thin layer of the sauce. Place in the oven to crisp up. When the bottom is crispy, throw on some shredded cheese (I used cheddar) and a little more chile sauce, and put back in the oven to melt the cheese.
When the cheese is melted, remove from the oven, let cool a little, then fold in half, and eat.