Panel 1: We find ourselves watching John stand at the rec room door to ask Mike what's going on in the kitchen. Mike says that he dunno 'cause it's Liz's turn to cook dinner.
This sets off an alarm signal in my brain because I know not to leave stoves unattended. The problem that I see and that Lynn does not is that the kids don't because watching Elly has taught them that "cooking" means "dumping grub in a slow cooker and walking away."
Panel 2: As they walk upstairs, this suspicion of mine that dinner will be ruined because children can't do anything right is confirmed a little when he asks what she's cooking and she says "macaroni and cheese."
Panel 3: It's confirmed a lot when she tells him not to worry 'cause all you hafta do is put it in the pot an'boil it till it's done. Something is not going to go well because Elizabeth cannot quite see the surface of the stove, let alone do much without standing on a chair or something.
Panel 4: When he pulls out a big block of KD that's still stuck together, he asks her if she's not supposed to stir it.
Summary: This is somehow meant to prove that the kids can't be trusted to look out for themselves without Elly telling them what to do and when to do it but all I see is them doing what they see her doing: dumping slop in a pot and walking away so as to sit on her arse grousing about working half to death. Showing them how to do it clashes somewhat with Lynn's/Elly's refusal to understand that children are naturally curious about what grown-ups do. This means that Elly's being driven nuts by the oppressive and evil presence of tiny people in her vicinity ensures that she must run around in circles cleaning up the mess they don't know how not to make.