Yes, you can compost swedes – we mean the vegetable also known as rutabaga, yellow turnip or neeps though, not a person from Sweden. (The latter do compost too, just slower and we wouldn’t advise doing it in your own compost heap for various reasons.)
Peelings from a swede – the vegetable – will rot down super fast but when whole, they take ages to break down because they’re so dense — cut them into chunks to speed up the composting process.
Cooked swede can be composted too – but don’t compost it if it’s been cooked with meat or dairy as they can attract rats and other unwanted visitors to your heap.