Eclair Cake - cooking recipe

Ingredients

4 Tbsp. cocoa
1 c. sugar
1/2 c. milk
1 tsp. vanilla
1/2 stick margarine
2 pkg. instant vanilla pudding
8 oz. carton Cool Whip
3 1/2 c. milk
1 box graham crackers

Preparation

Icing:
Boil cocoa, sugar and 1/2 cup milk for 1 minute.
Add butter and vanilla.
Stir until both are melted.
Set aside.