1/2 c. butter
1 sq. unsweetened chocolate or 1/4 c. cocoa
1 c. sugar
1 c. flour
1 c. nuts
1 tsp. baking powder
1 tsp. vanilla
2 eggs

Preheat oven 350 degrees. Grease and flour 13x9 pan. In large saucepan over low heat, melt 1/2 cup butter and 1 ounce chocolate. Add remaining ingredients. Mix well. Spread in prepared pan.

FILLING:

8 oz. pkg. cream cheese, softened (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. chopped nuts
6 oz. pkg. chocolate chips

In small bowl, combine 6 ounce cream cheese with next 5 ingredients. Blend until smooth and fluffy. Stir in nuts. Spread over chocolate mixture. Sprinkle with chocolate chips. Bake 25-35 minutes.

FROSTING:

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

Sprinkle marshmallows over hot bars 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 and keep stirring until smooth. Immediately pour over marshmallows and swirl together.