In a small measuring cup, whisk together the flour and milk.
Melt your butter in a large skillet over medium heat. Add in the corn, cream, sugar, salt and pepper to taste, and the milk/flour mixture. Cook, stirring occasionally until the mixture starts to thicken.
Transfer to a medium sized casserole dish and top with parmesan cheese. Bake for 15-20 minutes (I had to broil mine for 1 minute at the end to get the brown marks). Garnish with chives and serve warm.