1/2 c. butter
1 sq. unsweetened chocolate
1 c. sugar
1 c. all-purpose flour
1/2-1 c. chopped nuts
1 tsp. baking powder
1 tsp. vanilla
2 eggs

FILLING:

6 oz. cream cheese, softened
1/2 c. sugar
2 tbsp. flour
1/4 c. butter
1 egg
1/2 tsp. vanilla
1/4 c. chopped nuts
6 oz. pkg. semi-sweet chocolate chips (if desired)

FROSTING:

2 c. mini marshmallows
1/4 c. butter
1 sq. unsweetened chocolate
2 oz. cream cheese
1/4 c. milk
1 lb. (3 c.) powdered sugar
1 tsp. vanilla

Preheat oven to 350 degrees. Grease and flour 13 x 9 inch pan. In large saucepan over low heat, melt 1/2 cup butter and 1 ounce chocolate. Add remaining bar ingredients and mix well. Spread in prepared pan.

In small bowl, combine 6 ounce cream cheese with next 5 filling ingredients. Blend until smooth and fluffy. Stir in nuts. Spread over chocolate mixture. Sprinkle with chocolate pieces. Bake 25-35 minutes or until toothpick in center comes out clean. Sprinkle with marshmallows and bake 2 minutes longer.

In large saucepan over low heat, melt 1/4 cup butter, 1 ounce chocolate, 2 ounce cream cheese and milk. Stir in powdered sugar and vanilla until smooth. Immediately pour over marshmallows and swirl together. Makes about 3 dozen bars.