Hawaiian Paradise Cake
Serves: 1 3-layer 8-inch cake
For the Fluffy Yellow Cake:
  • 3 ¾ cups cake flour
  • 2 ½ cups granulated sugar, divided
  • 2 teaspoons baking powder
  • ½ teaspoon baking soda
  • 1 ¼ teaspoons salt
  • ½ cup buttermilk, room temperature
  • 15 tablespoons unsalted butter, melted and cooled
  • ¼ cup vegetable oil
  • 1 tablespoon vanilla extract
  • 2 teaspoons butter extract
  • 9 egg yolks and 4 egg whites, room temperature
  • 2 teaspoons lemon zest
  • ¼ cup plus 1 tablespoon guava puree
  • ¼ cup plus 1 tablespoon passion fruit puree
  • ¼ up plus 1 tablespoon lime juice
  • red, green, and yellow food gel
For the Lemon Curd:
  • ⅓ cup lemon juice (from about 2 medium lemons)
  • 2 large eggs plus 1 egg yolk
  • ½ cup granulated sugar
  • 2 tablespoons unsalted butter
  • 1 tablespoon heavy cream
  • ½ teaspoon vanilla extract
  • ¼ teaspoon fine salt
For the Study Whipped Cream:
  • 2 cups heavy cream, very cold
  • 1 cup powdered sugar
  • 1 teaspoon cream of tartar
  • 2 teaspoons vanilla extract
  • 8 ounces cream cheese, room temperature
To assemble the Hawaiian Paradise Cake:
  • 1 cup vanilla buttercream
To make the Fluffy Yellow Cake:
  1. Preheat oven to 350 degrees F. Grease 3 8-inch cake pans with baking spray, set aside.
  2. Whisk together flour, 2 ¼ cups granulated sugar, baking powder, baking soda, and salt together. In another bowl whisk together buttermilk, melted butter, oil, vanilla, egg yolks, and lemon zest, set aside.
  3. In a stand mixer fitted with a whisk attachment, beat egg whites at medium-high until foamy, about 30 seconds, gradually add remaining ¼ cup granulated sugar and raise speed to high, beating until soft medium peaks form, they should still be moist. Transfer egg whites to another bowl.
  4. In the now clean and empty mixing bowl and whisk attachment, add dry ingredients. With mixer's speed on low, gradually pour in wet mixture until incorporated. Scrape sides and bottom of the bowl down. Return mixer's speed to medium-low, beating until smooth and incorporated, about 10 to 20 seconds.
  5. Divide the batter into three equal parts (I weighed it out to be about 14 to 16 ounces). For each portion stir in one of the puree or juices along with the corresponding color (red for guava, yellow for passion fruit, and green for lime).
  6. Divide the egg whites into three portions and fold each portion into each different flavor.
  7. Pour batters into prepared pans and bake for 20 to 25 minutes, rotating halfway. A toothpick inserted should come out mostly clean with a few moist crumbs. Do not over bake these cakes!
  8. Let cakes rest in pans for 5 minutes before inverting onto a wire rack to cool completely. Wrap in plastic wrap and refrigerate overnight, this will create a moister crumb.
To make the Lemon Curd:
  1. In a small saucepan over medium heat, warm lemon juice until hot but not simmering. Whisk eggs, sugar. Slowly whisk hot lemon juice into egg-sugar mixture. Pour back into the saucepan and cook over medium heat, about 3 minutes, whisking constantly. Once it thickens and coats the back of a spoon, remove from heat, add butter, heavy cream, vanilla, and salt. Pour into a heat-proof bowl, cover in plastic wrap and cool, refrigerating until ready to assemble.
To make the Sturdy Whipped Cream:
  1. in a mixer fitted with a paddle attachment, beat cream cheese until smooth, about 2 minutes. Remove cream cheese. Switch to a whisk attachment. In the now clean mixing bowl combine heavy cream, powdered sugar, cream of tartar, and vanilla, whipping until stiff peaks form. Add beaten cream cheese back into mixing bowl, whipping at a medium speed, until combined, about 1 to 2 minutes.
To assemble the Hawaiian Paradise Cake:
  1. Apply a bit of frosting onto a cake board. Place the lime cake onto the board and apply a thin layer of frosting, followed by a thing even layer of lemon curd. Repeat this process with the passion fruit layer, finally topping with the guava cake layer. Give a thin crumb coat of the frosting, chill for 15 minutes, and then apply a thicker layer of the sturdy whipped cream. Dye remaining lemon curd and swirl on top of cake pipe of border with the remaining whipped cream.
Cake and curd recipe adapted from Cook's Illustrated, Frosting adapted from Faux Martha
Recipe by Layer Cake Parade at https://layercakeparade.com/hawaiian-paradise-cake/