Brownie Trifle
["1 (19.8 oz.) pkg. fudge brownie mix, prepared and cooled", "1 (3.5 oz.) pkg. instant chocolate mousse mix", "8 (1.4 oz.) Heath or Skor bars, crushed", "1 (12 oz.) container Cool Whip", "chocolate curls for garnish"]
["Crumble brownies.", "Prepare mousse mix according to package directions, but do not chill."]
["brownie mix", "instant chocolate mousse mix", "chocolate curls"]