Grease and flour a 9x13 inch baking pan. In a large saucepan over low heat, melt 1/2 cup of butter and 1 square of semi-sweet chocolate. Add 1 cup sugar, 1 cup flour, 1/2 to 1 cup nuts, baking powder, 1 tsp. vanilla and 2 eggs. Mix well and spread in prepared pan.
To make filling: In a small bowl, combine 6 oz. of the cream cheese with 1/2 cup sugar, 2 Tbsp. of flour, 1/4 cup butter, 1 egg and 1/2 tsp. of vanilla. Blend until smooth and fluffy. Stir in 1/4 cup of nuts. Spread over chocolate mixture in pan. Sprinkle with chocolate chips.
Bake in 350 degrees F oven for 25 to 35 minutes, until a toothpick is inserted in the center comes out clean. If the filling is browning too fast put aluminum foil loosely over the pan.
To make frosting: In a large saucepan over low heat, melt 1/4 cup butter, remaining square of chocolate, the reserved 2 oz. of cream cheese and milk. Stir in powdered sugar and 1 tsp. of vanilla, stirring until smooth.
When brownies are done, remove from oven. Sprinkle with marshmallows and return to oven for 2 minutes. Immediately upon removing from oven the second time, pour frosting over marshmallows and swirl together. Store in refrigerator.
Calories From Fat
% Daily Value*
Total Fat 0g
Saturated Fat 0g
Trans Fat 0g
Dietary Fibers 0g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.