Cauliflower: https://www.wholesomeyum.com/cauliflower-steak/

The lemon pepper is my own addition.

The cabbage is really a non recipe in that I chop it, toss it in olive oil salt and pepper, and slow braise until it just kind of melts in your mouth. There are more detailed recipes too: https://www.feastingathome.com/braised-cabbage/