Butter 8-inch round micro proof pie plate.
Prepare brownie batter as directed on package.
Pour into prepared pie plate.
Place in oven.
Cook on HI, 3 minutes.
Rotate pie plate one-quarter turn.
Cook on HI, 3 to 3 1/2 minutes, or until brownies test done.
Let stand in pie plate until cool.
Sprinkle with confectioners sugar and cut into wedges or squares.