Fudge Topped Brownies

Fudge Topped Brownies 1 cup butter 4 ounces unsweetened chocolate, chopped 2 cups sugar 2 teaspoons vanilla extract 4 large eggs 1 1/2 cups all-purpose flour 1 teaspoon baking powder 1/2 teaspoon salt 1 cup chopped wlanuts Fudge 4 1/2 cups sugar 1 (12-ounce) can evaporated milk 1/2 cup butter, cubed 1 (12-ounce) package semi-sweet chocolate chips 1 (12-ounce) package milk chocolate chips 1 (7-ounce) jar marshmallow creme 2 teaspoons vanilla extract 1 cup chopped walnuts Preheat oven to 350 degrees and line a 9x13-inch pan with foil. Lightly grease foil. Melt butter and chocolate in a heavy saucepan. Stir until smooth. Remove from heat. Whisk in sugar and vanilla. Whisk in eggs. Combine flour, baking powder, and salt and stir into chocolate mixture until combined. Pour batter into prepared pan and bake 25 to 30 minutes. To make fudge, combine sugar, evaporated milk, and butter in a large heavy saucepan. Bring to a boil over medium heat. Reduce heat and simmer for 5 minutes, stirring constantly. Remove from heat and stir in chocolate chips, marshmallow creme, and vanilla until smooth. Stir in walnuts and pour on top of warm brownies. Place in freezer for 2 to 3 hours to firm it up before cutting into squares.