1/2 c. melted butter
2 tbsp. brown sugar
1 1/4 c. flour

1 c. brown sugar
1/4 tsp. baking powder
Dash of salt
1 c. chopped nuts
1 tsp. cream of tartar
1 tsp. vanilla

Mix butter and brown sugar, then measure and add flour. Mix well and spread in greased 11 x 7 x 1 1/2 inch pan. Press firmly. Bake at 350 degrees for 5 minutes. Mix second set of ingredients well and spread over first mixture which has been baked for 5 minutes. The bake at 350 degrees for 20 to 25 minutes. Cool in pan. Cut into bars.