1 pkg. chocolate cake mix
1 c. sugar
4 tbsp. cornstarch
2 pkg. unflavored gelatin
3 tbsp. cocoa
3 c. milk
4 c. whipped topping
1 c. miniature chocolate chips
1/2 c. chopped nuts
Prepare cake mix according to directions on package. Bake and cool.
Prepare Mousse: Mix sugar, cornstarch, gelatin and cocoa. Stir in milk slowly until well mixed. Cook over medium heat until thickened and mixture comes to a full boil. Cool. When cold, beat well with mixer until fluffy.
Fold in whipped topping, then nuts and chips. Spread over cooled cake and refrigerate. Spread 2 cups whipped topping over mousse and garnish with more chopped nuts and small chocolate chips, if desired. (Or use chocolate curls.)