BAR:

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

FILLING:

8 oz. cream cheese (reserve 2 oz. for frosting)
1/2 c. sugar
2 tbsp. flour
1/4 c. butter
1 egg
1/2 tsp. vanilla
1/4 c. nuts
6 oz. pkg. semi-sweet chocolate

FROSTING:

2 c. miniature marshmallows
1/4 c. butter
1 sq. 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 9"x13" pan.

In large saucepan over low heat, melt 1/2 cup butter and 1 ounce chocolate. Add remaining bar ingredients; mix well. Spread in prepared pan.

In a small bowl, combine 6 ounces cream cheese with the next 5 ingredients. Blend until smooth and fluffy. Stir in nuts. Spread over chocolate mixture. Sprinkle with chocolate pieces. Bake 25 to 35 minutes. Sprinkle with marshmallows and bake 2 minutes.

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