There's only one thing better to eat at the end of the day than a home cooked tea - and that's not having to cook it!
The best solution is if you can get someone else to cook it for you. But failing that, being able to pull something out of the freezer, perhaps adding a few extra ingredients as in this case, is definitely the way to go.
A few hours cooking at the weekend is worth the effort for this kind of mid week luxury he you ask me.
I know you can do the same with ready meals and not have to even do the cooking, but a) you don't the same smug feeling as cooking the food yourself, and b) they rarely taste as good.