Heather's famous macaroni and cheese

1 and 2/3 cups macaroni, cooked and drained
2 TBL cornstarch
1 tea salt
1/4 tea pepper
1 can evaporated milk
1 cup water
2 TBL butter
2 cups cheddar cheese, divided

Preheat oven to 375.

Combine cornstarch, salt and pepper in medium saucepan. Add evap. milk, water and butter. Cook over medium heat, STIR CONSTANTLY, until mixture comes to a boil. Boil for 1min. (still stirring) Remove from heat. Stir in 1.5 cups cheese (I usually add more). Add macaroni, mix well. Pour into dish. Top with remaining cheese (i always add more).

Bake for 20-30mins or until cheese is melted and light brown.