If you shop at Costco, one of the best deals they have is their bag of russet potatoes. It’s a huge bag and the potatoes are always nice looking. I have bought bags at Safeway only to throw 1/2 away because they have turned green or are sprouting. I’ve never had that problem with Costco’s potatoes.
This is a great freezer item and I keep them wrapped in foil and then in a gallon freezer bag. I also get the large sour cream at Costco and a block of Tillamook cheese. Plus I buy my butter there too, so overall these are great savings. I think the sour cream is like $ 4. something and it’s huge. At the store, the pint of sour cream can be 3.99.
So first I bake as many potatoes as I think I need. In this case, I did the entire bag, so it was 15 very large russets. I put the oven on for at least 2 hours as with that number of potatoes it takes longer.
Then I let them cool 
some and then cut in half.
Then to the potato mixture, I add butter(lots) sour cream ( lots), and grated cheese. Then I mix together and start heaping back in the potato halves. 
I heap it quite full and mound it over the top, so I get fewer halves than I baked. So from this batch, I ended up with 15 halves. The other halves go to the chickens.
Then I wrap in foil and bag in the freezer bag. 
To use, I pull them out of the freezer a few hours before I bake but usually, I forget so I just pop them in the oven. I like to do a potato bar with green onions, bacon, more butter, and more sour cream. Sometimes that is the whole dinner with a green salad.
If you looking for some batch cooking ideas this one works great for us.
