Preheat the oven to 350 degrees F.
Generously grease a 8X8 or 9X9 square baking dish
In a large mixing bowl whisk together the sugar, flour, cocoa powder, salt, and baking powder. Make a well (hole) in the center and drop in the butter, eggs, and vanilla extract.
Mix together thoroughly and then fold in the chocolate chips
Add the brownie batter to the baking dish and flatten out the top into one even layer.
Bake for about 28-30 minutes