Heat oven to 350ºF. Stir grits into salted boiling water in large heavy saucepan. Return to boil. Reduce heat; cook for 2 1/2 to 5 minutes, stirring occasionally. Add cheese, butter, milk, eggs and garlic, stirring until cheese is melted. Pour into greased 2-quart casserole or baking dish. Bake 1 hour.