This cake recipe uses pistachio pudding mix in both batter and frosting for delicious cake take on Watergate salad.
Combine cake mix, eggs, oil, soda drink and 1 box pistachio pudding. Pour batter into a greased and floured 13 x 9 inch pan.
Bake at 350 degrees F (175 degrees C) for 30 to 40 minutes, or until a toothpick inserted into cake comes out clean. Cool completely.
While cake is baking, mix 1 box pistachio pudding, whipped topping, and milk. Chill. Ice cooled cake with chilled frosting.