Since my girl's daily stuff is a mash anyway, I just cut up a bute pill using scissors, then throw it in with her "grain." The pellets and pills all sort of dissolve together and it works pretty well. I generally add something "extra tasty" like raspberry leaves, when I feed bute, just to help the taste, but she has never had a problem with just grain and bute tablets.
She is NOT picky. At all.