Hiding vegetables

Spencer loves these yogurts. Which is good, because these days he's a meat and cheese and bread kid. He'll eat any kind of meat I put in front of him, including lamb, pork (his favorite), chicken, beef, bacon, shrimp, fish ... you get the point. And cheeses please him, and lots of bread (not too big on rice or pasta, unless it's covered in cheese). But the only vegetable I can get him to eat regularly is soybeans, and I don't know if that counts.

But I wish if they were hiding vegetables in yogurt that he'll gobble up, why can't they figure out how to make Blueberry-Broccoli yogurt? Or Green bean and blackberry? Or black cherry and spinach? Squashes and sweet potatoes I'm sure I could fit somewhere into his diet in other ways.
PS - He will eat raw brussel sprout leaves, but I can't get him to touch them cooked. He doesn't understand that they're like candy.

PPS- My next mission is to add cauliflower to the mac & cheese and see if he'll go for it.