Preheat the broiler. Heat a heavy medium-sized skillet, preferably cast iron
, over medium high heat. Add the oil, then add the scallions and stir for about 3 minutes, until they become tender. Add the corn puree, and the cheese and stir frequently until everything is blended and the cheese is melted, about 4 minutes. Transfer the pan to the broiler for about 1 minute until the top is nicely browned. Let it sit for a couple of minutes to thicken up a bit.