1/2 c. butter
1 oz. unsweetened chocolate square
1 c. flour
3/4 c. chopped nuts
1 tsp. baking powder
1 tsp. vanilla
2 whole eggs

Above is the base ingredients. Below is the filling ingredients. 1/4 c. butter, softened 1/2 c. sugar 2 tbsp. flour 1/2 tsp. vanilla 1 whole egg 1 c. chocolate chips, if desired 1/4 c. chopped nuts

Below is the frosting ingredients: 1/4 c. butter 1/4 c. milk 1 oz. square unsweetened chocolate 3 c. powdered sugar 1 tsp. vanilla

Heat oven to 350 degrees. Grease and flour 13 x 9 inch pan. In large saucepan, over low heat, melt butter and chocolate. Lightly spoon flour into measuring cup, level off. Add remaining base ingredients, mix well. Spread in prepared pan.

In a small bowl, combine all filling ingredients except nuts and chocolate chips. Beat 1 minute at medium speed until smooth and fluffy, stir in nuts. Spread over chocolate mixture, sprinkle evenly with chocolate chips. Bake at 350 degrees for 25 to 35 minutes, or until toothpick inserted in center comes out clean. Immediately sprinkle marshmallows over top. Return to oven, bake 2 minutes longer.

In large saucepan, over low heat, melt 1/4 cup butter, 1 oz. chocolate, reserved 2 oz. cream cheese and milk. Remove from heat, stir in remaining frosting ingredients until smooth. Immediately pour over marshmallows and lightly swirl with knife to marble. Chill until firm; cut into bars. 36 bars. Tip: self rising flour is not recommended. Makes 36 servings.