Usually I HATE nuts in my brownies but these had very few ingredients so I thought they would probably need some texture. I ended up thinking that these were way too bitter, so for me the vanilla ice cream saved the night, but my friends said they liked them as they were. Probably they were just being polite though. If I make these again, I think I will use some bittersweet or semisweet chocolate instead of all unsweetened like the recipe called for, and toss some chocolate chips in there instead of walnuts.
This recipe wasn't all bad though: I didn't have to use a double boiler to melt the chocolate (actually, probably because it was unsweetened so being close to the heat couldn't possibly make it any more bitter), there were only like 3 ingredients (so they were easy to make!) and the texture came out very nice: velvety and not too dense (after my previous cherry brownie baking experience, I would have been really put off if my brownies had come out that dense again.)