I've mixed about a gram of some dank herb into the brownie mix. The trick is butter up the pan and sprinkle finely chopped weed. next pour about half the batter and pour the rest of the weed. Next pour the rest of batter on top of that. Bake it lower than the 350 suggested. Try 315 degrees, for about 45 minutes or so The slower the better, that way the THC can stick more to the butter and egg. just keep on checking your brownies, you don't want them too dry!!! nice and moist does the trick. with in 25 minutes to an hour you'll be baked!