1 lg. box vanilla instant pudding
3 c. milk
8 oz. container Cool Whip
4 oz. container sour cream
1 box graham crackers
1 can chocolate frosting

Mix pudding and milk, and let stand for 5 to 10 minutes. Fold in the Cool Whip. Fold in the sour cream.

Line a 9 x 13-inch dish with graham crackers. Pour half of pudding mix over graham crackers. Put another layer of graham crackers, then the other half of the pudding mix, and then another layer of graham crackers. Spread the can of chocolate frosting on top.

Refrigerate 20 to 30 minutes before serving. Enjoy!