1/2 c. butter
1/3 c. brown sugar, packed
1 1/4 c. all-purpose flour
2 eggs
1 c. brown sugar, packed
1/4 c. all-purpose flour
3/4 tsp. baking powder
1/4 tsp. salt
1 1/2 c. raisins
1/2 c. chopped walnuts

BOTTOM LAYER: Crumble first 3 ingredients together in bowl. Press into greased 9 x 9 inch pan. Bake at 350 degrees for 10 minutes.