*you may use coconut oil in place of butter to make dairy-free, or avocado oil as well. Because the cookie dough is contained in the skillet, no need to worry about spreading.
*whole wheat white flour does give the cookie a slightly bread-like texture compared to traditional all-purpose flour. You may be sub with 3 TBS whole wheat + 3 TBS unbleached all-purpose. Or you could also do 1/2 cup unbleached all-purpose. The texture of the cookie will change slightly depending on which flour you decide on.
recipe adapted from here
Keywords: skillet cookie, giant cookie, chocolate chip skillet cookie