I make this cabbage a lot!  I serve it with anything from pork, chicken, to steak.  I love the heat from the pepper flakes.  Once it was determined that Serena didn't like cabbage, spicy or not, I brought the heat on.  Now it's a regular side item on the menu. 

Spicy Steamed Cabbage

small head of cabbage, diced up
olive oil
garlic powder
ground pepper
red pepper flakes

In your steamer pot, add a layer of cabbage.  Sprinkle olive oil over the cabbage.  Sprinkle with garlic powder, ground pepper, and red pepper flakes.  Spread the remainder cabbage.  Sprinkle with a little more garlic powder, ground pepper, and red pepper flakes.  Steam for about 6 minutes and stir.  Steam until it is tender to your liking (about 5 more minutes in my case) and remove from heat.