Heat oven to 350 degrees F. Grease 9-inch square baking pan and set aside.
Stir together butter, sugar and vanilla in bowl. Add eggs; beat well with spoon. In a separate bowl, stir together flour, cocoa, baking powder and salt; gradually add to egg mixture, beating until well blended. Add chocolate chips and combine well. Stir in nuts, if desired. Spread batter evenly in prepared pan.
Bake 20 to 25 minutes or until brownies begin to pull away from sides of pan. Cool completely in pan on wire rack. Prepare Creamy Brownie Frosting; spread over brownies. Cut into squares. About 16 brownies.
Creamy Brownie Frosting
Beat butter, cocoa, corn syrup and vanilla in small bowl until blended. Add powdered sugar and milk; beat to spreading consistency. About 1 cup frosting.
by The Savvy Kitchen