I guess I do this, in a way.

DS is not fussy, but is with veg. So I generally disguise and hide them.

If he asks what's in his dinner, I'll say, 'just chicken, and rice and curry sauce' for instance, but I don't tell him I peeled and grated a zucchini into it that he just can't see, or he just wouldn't eat it, for the sheer fact it contains a vegetable.