In a large cast iron skillet, add corn, butter, mayonnaise, and sugar. Bring skillet to medium heat and stir contents continuously until butter is melted and corn is evenly mixed in the butter and mayonnaise. Sprinkle salt and pepper and mix in. When the mixture is bubbling and hot, sprinkle the surface with cheese. You can cover skillet with a lid until cheese is melted or you can put the skillet into the oven.

To finish off in the oven, place skillet in oven. Set your oven to low broil. Watch through oven door carefully and let cheese broil about 3-5 minutes or until the surface turns a light brown. Remove from oven and garnish with fresh scallions. Serve while warm.