So I just feel like I should point out OP is experiencing a sudden, life-changing insight involving a thin, flat cake of batter.

Here's a mural they recently made in Mainz, Germany, in memory of Paul Crutzen, who popularized the term 'anthropocene'.

This parallel between individual overeating and global overheating is a central trope for Ian McEwan's novel Solar (2010). The increasingly overweight protagonist is called "the expanding universe" at one point.

Legal Fiction, by William Empson

Plus, I recommend Samantha Harvey's 2023 novel, Orbital, spanning one day on a space station orbiting Earth. It's really good.