1Sift flour, baking powder and salt together and set aside.
2Melt butter and brown sugar in saucepan; cool.
3When cool, add eggs, one at a time.
4Add flour mixture; add chips and nuts last.
5Spread in a jelly roll pan; bake at 350 for 25-30 minutes - Do not overcook; batter will be very thick.
6Cut in squares when cool.