1 (8 oz.) pkg. cream cheese, divided
1 1/2 c. sugar, divided
1 c. plus 2 tbsp. flour, divided
1 c. butter, softened and divided
3 eggs, divided
2 1/2 tsp. vanilla, divided
2 oz. unsweetened chocolate, divided
1 1/4 c. chopped walnuts, divided
1 tsp. baking powder
1 c. semi-sweet chocolate chips
2 c. miniature marshmallows
1/4 c. milk
3 c. powdered sugar

In small mixing bowl, blend 6 ounces cream cheese, 1/2 cup sugar, 2 tablespoons flour, 1/4 cup butter, 1 egg, and 1/2 teaspoon vanilla; set aside. In medium saucepan, over medium heat, melt 1 ounce chocolate and 1/2 cup butter. Remove from heat; add 1 cup sugar, 1 cup flour, 1 cup nuts, baking powder, 1 teaspoon vanilla, and 2 eggs; blend well. Grease 13 x 9 x 2 inch pan; spread batter in pan. Spread cheese mixture over batter. Sprinkle 1/4 cup nuts and chocolate chips over cheese layer.

Bake at 350 degrees for about 28 minutes or until almost done. Sprinkle marshmallows over all; return to oven for 2 minutes. In medium saucepan, melt 1/4 cup butter, 1 ounce chocolate, 2 ounces cream cheese, and milk. Remove from heat; stir in powdered sugar and 1 teaspoon vanilla. Immediately drizzle over marshmallows. Chill well. Cut into about 30 bars.