size of pasta over dish and/or casserole dish for 4 people

[oljkup789]

Would like to buy some over dishes for making things like pasta bakes, cottage pie and stuff but not sure how big they should be for a family of 4. For some reason, cant find it online. What does everyone else use? I get that it's a litre per person for a casserole but for a shallower thing like lasagnes, cottage pies and pasta bakes?

https://www.diy.com/departments/pyrex-cook-freeze-set-of-4-rectangular-containers/3426470282505_BQ.prd?ds_rl=1272379&gclid=EAIaIQobChMItJD9j5DKgAMVydvtCh18AwOSEAQYAiABEgLomfD_BwE&gclsrc=aw.ds

i have these they stack inside the big one, I generally use the second largest unless I'm trying to make leftovers.

https://www.masoncash.co.uk/innovative-kitchen-lasagne-dish/?gclid=Cj0KCQjwrMKmBhCJARIsAHuEAPT5uTUEsCd3_OB1Awi6YHkne7_fBW189mcLQnecnQIupIJP454whSMaAtHEEALw_wcB
Just for reference as I'm sure others are available. I use 2 of this size for a family of 7