In a large bowl, combine the flour, sugar, cocoa powder, baking powder, and salt. In a separate bowl combine the oil, milk, water, eggs, and vanilla. Now mix everything together including the chocolate chips and walnuts, be careful that you don’t over mix.
Pour the brownie batter into an 8×8 nonstick pan. Drop in a few more chopped walnuts on the top and bake at 350 degrees F for about 30 minutes. Use a toothpick in the middle of the pan to check if it is done. Enjoy!