Rocky Road Fudge Bars

1/2 cup butter
1 ounce unsweetened chocolate
1 cup granulated sugar
1 cup all-purpose flour
1/2 to 1 cup chopped nuts
1 teaspoon baking powder
1 teaspoon vanilla extract
2 eggs

Preheat oven to 350 degrees F. Grease and flour a 13 x 9-inch 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 ounces cream cheese, softened
    (reserve 2 ounces for frosting)
1/2 cup granulated sugar
2 tablespoons flour
1/4 cup butter, softened
1 egg
1/2 teaspoon vanilla extract
1/4 cup chopped nuts
1 (6 ounce) package semisweet chocolate chips

In small bowl, combine the 6 ounces cream cheese with next 5 ingredients. Blend until fluffy and smooth. Stir in nuts and spread over chocolate mixture. Sprinkle with chocolate chips. Bake at 350 degrees F for 25 to 35 minutes or until a wooden pick inserted in center comes out clean.

Frosting
2 cups miniature marshmallows
1/4 cup butter
1 ounce unsweetened chocolate
Remaining 2 ounces cream cheese
1/4 cup milk
1 pound confectioners