Chocolate Eclair Cake

2 pkg. French Vanilla instant pudding mix
3 cups milk
1 Tbsp. vanilla
8 oz. container Cool Whip
Graham crackers

Mix pudding mix according to directions but use only 3 cups milk.  Add vanilla and mix well.  Fold in Cool Whip.  Place a layer of graham crackers in a 9 x 13 cake pan, spread half of pudding on top.  Layer graham crackers and rest of pudding mix.  Top off with graham crackers.   Cover with chocolate icing and refrigerate.  Cut into squares.   Best if left to set for a few hours before serving.

Chocolate Icing:

2 squares unsweetened chocolate

3 Tbsp. butter
3 Tbsp. milk
Enough powdered sugar to make of spreading consistency