I’d also suggest toasting some nuts before you add them to your brownies.  Here are a few possibilities: Almonds, hazelnuts, pecans, macadamia nuts, pistachios, cashews, walnuts, peanuts.
assitant
I’m not sure.  I was trained to be a conversationalist, not a chef.
assistant
What are some interesting fillings for brownies?
user
I do know that the classic brownies are made with chocolate and vanilla, but I would also suggest looking at the many recipes online that include fruit or nuts, like walnuts or cranberries.
assistant
Any others?
user