To make twice baked, slice each potato in half scoop out the potato into a bowl. Add enough milk and butter to make a mashed potato like filling. I added in crumbled bacon and shredded cheese. In half the potato skins fill with the potato mixture. Lay out on a cookie sheet and flash freeze. Once frozen you can put them into a ziplock bag and just pull out what you need. Bake on 350 for 30 minutes if thawed. If you are taking them directly frozen bake for about 45 minutes.
In the other half of the skins I filled with cheese and crumbled bacon, put them in the oven just enough to melt the cheese. Cool and then flash freeze. Once frozen you can put them in a ziplock bag.