Heat oven to 350ºF. Melt 1/2 cup butter and 2 squares chocolate in 2 qt.
saucepan over medium heat, stirring constantly, until smooth (4 to 6
Stir in all remaining brownie ingredients until well
mixed. Spread into greased 8 in. square baking pan.
Bake for 25 to 30 minutes or until brownie just begins to pull away from
sides of pan. Cool completely.
Combine all filling ingredients except chocolate in small bowl. Beat at
medium speed until creamy. Spread over cooled bars. Drizzle with melted
chocolate. Cool completely; cut into bars. Cover; store refrigerated.