Cake:

1 (6 oz.) French vanilla pudding (instant)
3 c. milk
1 box graham crackers
1 (9 oz.) Cool Whip

Frosting:

2 c. sugar
1/4 tsp. salt
2/3 c. cocoa
1/2 c. milk
1/2 c. butter
2 tsp. vanilla

Cake: Butter 9 x 13 dish. Line with whole graham crackers. Mix pudding and add milk. Beat 2 minutes, then fold in Cool Whip. Pour a good layer over crackers. Add a layer of crackers and another of pudding. Top with crackers.

Frosting: Bring sugar, salt, cocoa and milk to a boil. Cook 1 minute and remove from heat. Add butter and vanilla. Cool, then beat until smooth and thick enough to spread.