1 (19.8 oz.) box fudge brownie mix
3 (3.5 oz.) pkg. instant chocolate mousse (4 serving size pkg.)
8 (1.4 oz.) Heath or Skor candy bars
1 (12 oz.) container Cool Whip

Prepare brownies according to package directions; let cool. Mix mousse according to directions; refrigerate until ready to use. Break candy bars into small pieces. Break cooled brownies into small pieces.

Place brownies in bottom of large glass bowl. Cover with mousse, half the candy bars, and top with half the Cool Whip. Repeat with remaining ingredients.