1 c. shortening
1/2 c. brown sugar
1/2 c. white sugar
2 egg yolks
1 tbsp. cold water
1/2 tsp. baking soda
2 c. flour
1 (6 oz.) pkg. chocolate bits
2 egg whites
1 c. brown sugar

Mix first 7 ingredients and pat in 13 x 8 inch pan. Sprinkle with chocolate bits and push into mixture. Beat egg whites until stiff and add 1 cup brown sugar. Spread over top of mixture. Do not touch sides of pan. Sprinkle with chopped walnuts. Bake at 325 degrees until golden brown, about 35 minutes.