Preheat oven to 190ºC . In food processor, combine first three ingredients with the metal blade until crumbly. This can also be done with two knives or a pastry cutter. Pat this crust into a buttered 23 cm x 33 cm pan. Bake for 10 minutes. Cool. When crust is cool, spread pecans evenly over surface. Beat eggs with brown sugar until thick. Add vanilla. Put salt and baking powder in the bottom of a quarter cup measure; fill the rest of the measure with flour. Stir into the egg mixture. Pour over crust. Sprinkle chocolate chips evenly over mixture. Bake at 190ºC . for 20 minutes or until center is baked. Cool, then cut into 32 pieces. ---Dying for Chocolate Diane Mott Davidson