1. Prepare 1 cup grits according to package directions; remove from heat, and stir in cheese and butter until blended.
2. Whisk together eggs, milk, and salt. Gradually whisk about one-fourth of hot grits mixture into egg mixture; add to the remaining hot grits mixture, whisking constantly. Spoon mixture evenly into a lightly greased 13-x-9 inch baking dish.
3. Bake at 350? for 40 to 50 minutes or until set.