Unless you use flavored yogurt, they're pretty much flavorless. The dough is too dry, needed milk. First time I made them I went exactly by the recipe and it made flavorless inedible hockey pucks.
The second time I used blueberry yogurt, and added a bit of milk to help tha dough come together and they were much better. Still not great, though. Probably won't try it again; there are better muffin recipes out there
