2 c. brown sugar, well packed
1 tsp. baking powder
1 tsp. vanilla
1 egg
1/2 c. chopped walnuts
2 c. flour
1/2 c. soft butter
1/2 tsp. salt
1 c. milk
1 c. semi-sweet chocolate chips

Blend brown sugar, flour and butter until mixture resembles coarse crumbs. Remove 1 cup of the mixture and reserve. To remaining mixture add the baking powder, salt, vanilla, milk, and egg. Mix until smooth and blended. Butter a 13x9 cake pan. Turn batter into the pan; spread it evenly. Sprinkle reserved crumbs over evenly, then sprinkle with chocolate chips and walnuts. Bake at 350 degrees for 30-35 minutes.