woah!!!! Now, I know some here think you're wired a bit different. But for the first time ever, I've got to stop you there.
The cook doesn't wash up. One cooks, the other washes up.
That's basic human rights.
Yes there is, saves on washing up the frigging saucepan after you've made the mash (Starchy glue) in it. However my solution is far better. Don't eat mash or if you eat mash, make sure the missus made it (and therefore has to wash it up)
To be fair there could be many legitimate reasons for buying instant mash. You could be prepping for Brexit, cutting it in to drugs, having a 1970's themed sex party.
There's no excuse for ready meal mash.