It's being reported that high end Cooking has received a bit of an overhaul in the latest Patch 3.1 PTR build. Well over 20 recipes have been changed so they won't go grey quite so early, making the trip to 450 Cooking a much easier process.
The test realms haven't actually come back up yet so I'm unfortunately unable to get a list of recipes that have changed, but it sounds like leveling Cooking will suck much less. I think my it took my Priest longer to hit 450 Cooking than it took my Paladin to hit 450 Blacksmithing. After grinding through that, I never want to make another Feast again. Unfortunately, I'm sure I'll be making them by the dozen when Ulduar rolls around. Sigh.
I would do a great many things to be able to summon Jillian on demand.