Watergate cake is a great dessert for summer. This pistachio sheet cake recipe has been enjoyed by my family for years, and it’s creamy and luscious thanks to boxes of pistachio pudding mix and Dream Whip.
If you like Watergate Salad, then you’re going to love this cake! It’s topped with a delicious frosting that keeps the cake cold—perfect for hot days when all we want is something refreshing.
How To Make Watergate Cake
For this pistachio cake recipe, you need the following ingredients:
- 2 boxes (3.4 ounces each) instant pudding mix, pistachio flavored
- 1 box white cake mix
- 1 cup 7-Up
- 3 egg whites
- 1 cup oil
- 1½ cups milk
- 2 envelopes of Dream Whip
If you have never worked with Dream Whip, don’t let it intimidate you. Dream Whip is a commercial powdered mix to make whipped cream. If you have a mixer, you won’t have any problems with it.
To make Watergate Cake, start by preheating your oven to 350 degrees (Fahrenheit). While it is warming up, grease and flour a 9×13 cake pan. Alternatively, you can use Baker’s Joy to prep the pan. Just spray a light layer over the bottom and inside.
For the cake, blend one box of instant pistachio pudding mix, a box of white cake mix, 7-Up, egg whites, and oil in a mixer for 5 minutes at medium speed. Pour the cake batter into the prepared cake pan and bake for 30 – 35 minutes or until a toothpick inserted in the middle comes out clean.
Cool the cake completely before making the pistachio whipped topping.
For the topping, beat 1 box of pistachio pudding mix, milk, and the Dream Whip. Beat until it is thick and peaks form.
Spread the topping on top of the cake and place it in the refrigerator. This cake will need to be kept cold at all times.
If you plan on taking it to a family get together, church potluck, or some other event, pack it in a container and include ice packs. Remember, the icing is made with a dairy product and needs to be kept cold.
Watergate Dream Cake
Ingredients
- 1 3.4 ounce box instant pudding mix pistachio flavored
- 1 box white cake mix
- 1 cup 7-Up
- 3 egg whites
- 1 cup oil
Whipped Topping
- 1 3.4 ounce box instant pudding mix pistachio flavored
- 1½ cups milk
- 2 envelopes whipped topping Dream Whip
Instructions
- Preheat oven to 350 degrees. Grease and flour a 9 x 13 inch cake pan.
- Blend 1 box of pistachio pudding, cake mix, 7-Up, egg whites and oil in mixer for 5 minutes. Pour into prepared pan.
- Bake for 30 – 35 minutes. Cool completely.
- Beat 1 box of pistachio pudding mix, milk and whipped topping. Beat until thick and peaks form. Ice/frost cake. Keep cake chilled.
Video
Nutrition
Why Is It Called Watergate Cake?
The cake is similar to Watergate Salad which is made with pistachio pudding, canned pineapple, whipped topping, crushed pecans, and marshmallows.
There are two possibilities of how “Watergate” landed in the name that unites both dishes, though no one knows for sure.
The first possibility is that the Watergate Salad recipe was developed by the chef at the Watergate Hotel – yes, that one that made the news thanks to Richard Nixon.
According to Southern Living, the other explanation is that “the cake version has icing to ‘cover up’ any mistakes and, like politics, is chock full of nuts.”
Would you prefer Watergate Cake or Watergate Salad?
Diane says
Can you use a bundt pan instead of 13×9?
Lynda says
I don’t know. The cake might turn out alright, but the creamy topping probably would not work out right.
Karen says
How many servings does the 13×9 yield for 245 calories?
Lynda says
Hi Karen,
Great question – thanks for asking!
I imagine you must have been thinking that the caloric value was awfully low. And it was. I don’t know how many servings was originally input to the app that calculated the nutrition, so I thought I would check into the values and plug-in 12 servings.
The program that I am using now did not have the information for the pistachio pudding mix, cake mix, or Dream Whip. I plugged-in the values and updated the nutrition information.
If you cut the cake into 12 even pieces, each slice should have 436 calories.
I am so sorry that the previous information was not accurate.
Lynda
Dina says
Should it be 2 boxes of instant pudding mix pistachio flavored? I can’t wait to make this on my next day off.
Lynda says
It does take 2 boxes of instant pudding mix. Though I had 2 boxes listed, they weren’t together and it was easy to overlook. I updated the post – I hope that it is clearer now. Thanks for your input.
Bell says
@Lynda, But you really need to indicate what size the instant pudding is, small box or large box. Because some people who have never made this before could be confused. This is one of my family’s favorite and I make it a lot, we love it. Also one box is for the cake and one box is for the icing.
Lynda says
Thank you so much for your feedback. I updated the post to reflect that small boxes (3.4 ounces) are what needed. It really is a delicious cake, isn’t it?!
Donna L Tidwell says
I love watergate cake. It was the first cake I baked as a child. EXCELLENT
Susan Badger says
My mom made this all all the time when I was growing up. One of my all time favorite desserts.
Kathryn Cobb says
Mine as well!
Jennifer Deitch says
Everyone is out of the dream whip. Is there a substitute for dream whip?
Lynda says
I am not sure. I googled it and this is some info that I found:
“Dream whip is a mix to make your own whipped cream – yes you can use it in place of Cool Whip. … whip cream is natural, dream whip is synthetic, and cool whip is pre-whipped synthetic. If it calls for dream whip, read the recipe to see if it mixes anything other that milk and vanilla into the powder.” From Askinlot.com.
I imagine that you could probably blend the pudding mix with Cool Whip or make whipped cream by beating heavy cream and then add the pudding mixture to the cream.
Kathy says
Lynda, Thank you for sharing a nice and easy recipe. I opted for lemon pudding, rather than pistachio, in the cake as well as the frosting for a nice summertime dessert. Yummy!
Lynda says
That sounds delicious! Thanks for sharing.
Donna Brank says
I’ve made this for years,. It’s even better if you add drained crushed pineapple, You can even use the juice in the cake. And since I am diabetic it works just as well with the no sugar pudding.
Erica says
Tried it!! My family and my neighbors loved it!!! ⭐️⭐️⭐️⭐️⭐️
patti says
Think I remember a similar recipe fro years past. i would make it tonight, if I only had the dream whip! I should buy some to have on hand
Alli says
I haven’t used Dreamwhip in years! Oh, the great memories that are flooding my mind. Your watergate cake looks like a dream. I think I’ll make it for St. Patrick’s day. Wish I had a piece right now.
Lynda says
Thank you. It would make a great dessert for St. Patrick’s Day. Hope you enjoy it.
Paula says
Yum! That looks so good. I’ve never had it before. I have a piece of that bakeware and it is AMAZING.
Dollie Smith says
What can you use if you don’t have 7up.
Lynda says
Sprite or any clear-colored soda should be fine.