Slice the cabbage into rounds about 2–3 cm thick.
Sprinkle both sides with salt and pepper.
Heat olive oil in a pan.
Place the cabbage in the pan and grill over medium-low heat for 5 minutes.
Flip the cabbage and add butter, cooking for another 5 minutes.
When the edges turn golden, transfer to a plate.
Finish with parsley or cheese on top.