This one is super easy. Follow the directions on the bag.
I added extra garlic powder and dried parsley (like ¼ of a cup each) that I found at the back of the spice drawer. Nothing like expired spices to add that extra flavor. I also put a stick of butter in it. Yes, a stick, but I did make two family sized bags so adjust as you see fit.
My kids have never liked mashed potatoes. This was no exception. I made it to go with my Ribs and perhaps a bit of nostalgia. We had instant potatoes often as kids. Tasty, tasty nostalgia.