The last time I made these brownies (a week and 2 blizzards ago) I had a bit of chopped walnuts on hand and threw those in.
However this time I was out of walnuts and only had some pistachios on hand, pistachios that were still in the shell. Since we were on our third blizzard in like 7 days and both school and work was cancelled, I figured with nothing but time on my hands, I might as well shell the pistachios and add those to my brownies.
I really wanted to have the rich little nuggets of pistachio flavor jump out so I barely chopped the pile after I shelled them. I ended up with about 1/2 cup of shelled nuts and just threw them into my favorite brownie mix. ( I like Bob’s Red Mill GF)
Since these nuts were roasted but NOT salted, after I spread the batter into my sprayed baking dish I sprinkled just the tiniest amount of course sea salt on the top. That would give that expected salty hint that you usually get with pistachios and the combination of sweet and salty is always fun.