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Old-Fashioned Watergate Cake Recipe (1980s Classic)

This vintage Watergate Cake is a nostalgic treat from the 1980s, known for its light green hue and rich, nutty flavor.
Made with pistachio pudding and a hint of lemon-lime soda, this moist and fluffy layer cake is topped with a creamy pistachio-infused frosting, embodying the over-the-top charm of the era.
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Prep Time 15 minutes
Cook Time 40 minutes
Course Dessert
Servings 2 9-inch layers

Ingredients
  

For the Cake:

  • 1 cup vegetable oil
  • 1 cup whole milk
  • 1 ½ cups granulated sugar
  • 1 3.4 oz package pistachio-flavored instant pudding mix
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 3 cups all-purpose flour
  • 1 teaspoon salt
  • 2 teaspoons baking powder
  • 1 ½ teaspoons baking soda
  • ¾ cup 7UP, Sprite, or lemon-lime flavored soda
  • 1 cup chopped pecans

For the "Cover-Up" Frosting:

  • 1 8 oz package cream cheese, softened
  • ½ cup unsalted butter softened
  • 1 3.4 oz package pistachio-flavored instant pudding mix
  • 5 cups powdered sugar
  • 2-4 tablespoons whole milk if needed
  • 1 cup sweetened shredded coconut for decoration (optional)
  • ½ cup chopped pecans for decoration (optional)

Instructions
 

Making the Cake:

  • Preheat your oven to 350°F. Grease two 9-inch round cake pans.
  • In a large mixing bowl, whisk together the oil, milk, sugar, pudding mix, egg, and vanilla until well combined.
  • In a separate bowl, sift together the flour, salt, baking powder, and baking soda. Gradually add this dry mixture into the wet ingredients, alternating with the 7UP. Stir until smooth.
  • Fold in the chopped pecans, then evenly divide the batter between the two prepared cake pans.
  • Bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean. Let the cakes cool in the pans for 10 minutes before transferring them to a wire rack to cool completely.

Preparing the Frosting:

  • Using a stand mixer or hand mixer, cream the softened cream cheese and butter together until smooth. Add the pudding mix and continue beating until fully incorporated.
  • Gradually add the powdered sugar, two tablespoons at a time, beating continuously until the frosting is light and fluffy. If needed, add a little milk to reach the desired consistency.

Assembling the Cake:

  • Place one cake layer on a serving plate and spread a generous amount of frosting on top. Stack the second layer over it and apply the remaining frosting evenly over the top and sides.
  • If desired, press shredded coconut around the sides and sprinkle chopped pecans on top for a classic 1980s presentation.
  • Chill for at least 30 minutes before slicing for the best texture and flavor.

Notes

  • For a more intense pistachio flavor, consider adding a few drops of green food coloring or extra chopped nuts to the batter.
  • Store leftovers in the refrigerator for up to 3 days.
Keyword 1980s dessert recipe, classic homemade cake, easy pistachio layer cake, green pistachio cake, lemon-lime soda cake, nostalgic dessert ideas, old recipes, old-fashioned cake with pudding mix, retro Watergate cake, vintage pistachio cake
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