I adapted this from a recipe I saw on TV many years ago, which used egg and sour cream as the filling. This is a big family favourite, which is easily adapted by adjusting the heat of the enchilada sauce (I like to use Texas Red Enchilada Sauce #42094)
This recipe uses a scone/damper dough for the bread, so no major kneading or waiting around for dough to rise. What you use to fill it is limited only by your imagination - pepperoni, ham, chicken, whatever takes your fancy! Note: you can make self-raising flour by mixing 2 cups all-purpose flour with 2 1/2 teaspoons of baking powder and a pinch of salt.
I adapted this from a recipe I found on Life's Ambrosia (http://www.lifesambrosia.com/2009/04/cajun-chicken-sandwiches-recipe.html) - it is so simple and absolutely delicious. Cooking time is refrigeration time.
I love all kinds of mac and cheese and grew up eating blue-box and home-made variations on the theme. This is one I came up with one day when I wasn't in the mood to make a roux or bechamel base for my sauce. The honey and mustard really add a depth of flavour to the sauce. You could easily subsitute the Velveeta for a more "grown-up" cheese, like sharp cheddar.