The recipe I used had a ton of comments to use more liquid to combat dryness and it also said that it makes more then the 12 muffins. Since I used the little tins I'm not sure but I did get 36 mini muffins out of it. Some bigger then others. Many comments also said that 25 minutes was way too long. Again because of the mini tins, I decreased the cooking time to about 15 minutes and lowered the oven temperature to 375º from 400º.
The muffins turned out pretty light on the tops but were definitely cooked. Link and picture below!
Chocolate Chip Muffins