I used the macaroni out of my #10 can that we dry pack canned as a ward a few months ago.
I made this just like it was from a box. I cooked a cup of macaroni, drained it, added a little butter, milk and cheese powder. The recipe on the can was a large batch, so I made a smaller one and kind of guessed on amounts. . . it's a pretty forgiving meal. :)
And here is my macaroni monster! She definitely approved!!