A different kind of brownie.
Preheat oven to 350 degrees. Grease 10x15-inch pan. Beat butter and sugar in bowl until creamy. Add 1 egg at a time, beating well after each egg. Stir in flour, baking powder and salt; blend well. Fold in chips and nuts. Turn in pan, spread evenly. Bake until top is lightly browned, about 20-25 minutes. Transfer to wire rack; let cool. Cut into bars. Congo bars will freeze.