1/2 c. butter or substitute
2 c. brown sugar
2 eggs
1 tsp. vanilla
1 1/2 c. all-purpose flour
2 tsp. baking powder
Salt (pinch)
1 c. chocolate chips
1/2 c. nuts, optional

In a large bowl, melt butter. Stir in sugar and vanilla. Beat eggs in one at a time, then all dry ingredients. Pour into a greased 9 x 13 inch pan and spread evenly. Sprinkle chocolate chips and nuts on top. Bake in oven at 350 degrees for 25-30 minutes. Cool and cut into squares.