hools003, I only use it for stir fries or just steam it to go with Asian style mains. Founds this on the net, not too inspiring
'Separate the leaves and wash well.
The green leaf is often cooked separately to the much thicker, paler stalk.
In a stir fry, cut off the stalks and slice. Cook for a couple of minutes before adding the leaves for 2 minutes.
The inner leaves are more tender and work well, raw, in salads. The tougher, outer leaves taste better cooked.
Use in stir fries, chopped in salads, braised, roasted or add to a soup for the last few minutes of cooking.
For a quick recipe, chop the pak choi and steam for 3-4 minutes. Serve with soy sauce.
Quick Idea
The leaves taste great in salads - just shred them. Keep the stalks for use in stocks or other recipes.'
or this recipe sounds nice
http://www.taste.com.au/recipes/20306/baby+pak+choy+frittata