This was my first vegan dessert that I made and it was great! I couldn't taste the coffee very much so I'll probably add more. Also, I didn't mix in the walnuts. I just sprinkled them on top. I cut the amount of chocolate chips and butter in half, but next time I probably won't have the frosting at all. I enjoyed the actual brownie part the best.
Oh! And I have some pretty heavy anti-vegan people around me and I made some of them try the brownies and they loved them!