I have encouraged my kids to eat well from day one. I add flavor - herbs and spices - to everything because I don't want them getting used to starchy bland food. I also want them to experiment - they don't have to love everything but they do have to try it.
In the past few years we've been doing amazing stuff with desserts. Pastry chefs have been using herbs and spices in their desserts. So vanilla cake doesn't have to be just vanilla it can have a little thyme. Or you could have a custard with a little lavender in it which is just amazing.