Blonde Brownies

1 1/3 sticks margarine, melted
1 lb. light brown sugar
3 eggs
2 3/4 cups flour
2 tsp. baking powder
1/2 tsp. salt
1 tsp. vanilla
1 8 oz. pkg. Nestle chocolate bits

Mix ingredients in order given and bake in 1 x 13" pan at 325 degrees for 25 to 30 minutes.