1/2 c. butter
1 (1 oz.) square unsweetened chocolate
1/2 - 1 c. sugar
1 c. white flour
1 tsp. baking powder
1 c. chopped nuts
1 tsp. vanilla
2 eggs, lightly beaten
1 c. semi-sweet chocolate pieces
2 c. miniature marshmallows
Cream cheese filling
Frosting

Place butter and unsweetened chocolate in saucepan over low heat. Heat just until chocolate melts. Stir in sugar. Combine flour, baking powder and nuts. Add to chocolate mixture with vanilla and eggs. Spread in greased and floured 13"x9" baking pan. Spread cream cheese filling over chocolate mixture. Sprinkle with chocolate pieces. Bake at 350 degrees for 20 to 25 minutes. Sprinkle with miniature marshmallows and bake an additional 2 minutes. While hot, spread with frosting, swirling it into marshmallows. Cool and cut into bars. Bars improve when refrigerated or freeze if desired.

CREAM CHEESE FILLING:

1 (8 oz.) pkg. cream cheese, softened (reserve 2 oz. for frosting)
1/4 - 1/2 c. sugar
2 tbsp. flour
1/4 c. butter, softened
1 egg
1/2 tsp. vanilla
1/4 c. chopped nuts

Combine 6 ounces cream cheese with sugar, flour, butter, egg and vanilla in mixer bowl. Beat until smooth and fluffy. Stir in nuts.

FROSTING:

1/4 c. butter
1 (1 oz.) square chocolate
Reserved 2 oz. cream cheese
1/4 c. milk
1 (1 lb.) box powdered sugar
1 tsp. vanilla

Melt butter in saucepan over low heat. Stir in chocolate, softened cream cheese and milk. Heat just until smooth. Remove from heat and beat in powdered sugar and vanilla until smooth.