M.L.
Try Jay Robb protein mixes. I used them while I was pregnant to get my 100 grams of protein daily. The chocolate was yucky to me, vanilla my favorite. They do require quite a bit of stirring. I can put them in my son's milk and he doesn't notice that its not nesquik.
Also, they come in small packets at the store- I use about 1/4 packet per sippy cut of milk and shake vigorously.