By coincidence, I was reading Jane Grigson on sprouts this morning. She reckons they don't keep well and the flavour becomes harsher if they're reheated, but I can't say I've noticed that - in my experience, they are fine when reheated.
What I can tell you is that under-roasting the sprouts is far preferable to over-roasting them, which makes them very bitter.
Grigson lists some classic recipes for sprouts, all of which sound rather old-fashioned in 2022, mostly involving lots of cream.
I was actually looking for recipes for butternut squash - of which we have a surfeit. Last night, I hacked into the >3kg specimen we harvested from the garden last month. I cut it up and roasted half of it with chilli and oregano, and served it topped with crumbled feta. With some roast potatoes on the side, that made enough for a generous dinner last night, with the leftovers for lunch today.
We still have the other half of it to eat - any suggestions for recipes welcome. Butternut squash apparently never troubled Jane Grigson's radar. I guess they would have been a bit of a rarity in the UK in the 70s.