Heat oven to 350°F. Spray 2-quart casserole with cooking spray. In food processor, place 1 bag of the corn, the sugar, flour, cornmeal, salt, butter, milk and eggs. Cover; process until smooth, stopping occasionally to scrape down sides.
Transfer mixture to large bowl; stir in 2 tablespoons chives and second bag of corn. Pour into casserole; sprinkle with cheese.
Bake uncovered 40 to 45 minutes or until set. Sprinkle with additional chives.