Can You Sneak Beets?

Obamafoodorama has a post of an interview with Sam Kass, the chef/gardener czar at the White House.  Despite the Obamas disdain for beets, he still plans to sneak them into a meal.

That's what he says, meaning he's either incredibly stupid or incredibly skillful. 

I like beets well enough, though beyond buttered, pickled, and souped I don't know what you do with them.  But beets are to me the vegetable least likely to be snuck anywhere. What other vegetable is there which will stain a deep red everything it comes in contact with?  You just can't do it without the diner's knowledge.  It's like saying in 1960 you're going to sneak Marilyn Monroe into a meeting of Catholic clergy.