Granny Mac's Mac and Cheese

"From Southern to the Core a beautfful cookbook I received in the 2011 Cookbook Swap fro, BusyMomof3, this reminds me of the cheese and mac I learnt in high school nearly 40 years ago from an American teacher the only difference was we used Australian cheddar as American cheese, the only addition I personally made was to add a sprinkle of paprika, unfortunately due to dietary restrictions it is no longer made. In the cooking time I have included cooking the pasta (this could vary a little on variety - I allowed 15 minutes which would I think be the maximum)..."