Pistachio Cake with White Chocolate Cream

Ingredients

For the cake:

• 4 large eggs 
• 1 cup cake flour 
• 1/2 cup ground unsalted pistachios (see Healthy Ingredient Spotlight and Quick Kitchen Nugget in weekly newsletter)
• 1/2 teaspoon baking powder 
• 1 cup sugar, divided use 
• 1/2 cup extra virgin olive oil 
• 1 teaspoon vanilla
• 1/3 cup room-temperature water 
• 1/4 teaspoon fine sea salt
• 1/2 teaspoon cream of tartar 

For the filling and garnish:

• 4-1/2 ounces white chocolate
• 1-1/2 cups heavy cream, divided use
• 2 tablespoons confectioners’ sugar
• 2 pints raspberries
• 1/4 cup unsalted pistachios, coarsely chopped
• Optional: edible dried rose petals 

Directions

Step 1

Make the cake: Separate the yolks from the whites when the eggs are cold and allow them to come to room temperature. 

Step 2

Place one of your oven racks in the center of the oven; preheat to 325°F. Line a 17-by-13-inch rimmed sheet pan with parchment paper (do not grease it). 

Step 3

In a small bowl, whisk together the flour, ground pistachios, and baking powder; set aside. In a large bowl or the bowl of a stand mixer fitted with the whisk attachment, beat the egg yolks and a 1/2 cup of the sugar at medium speed until pale, about 2 minutes. Mix in the olive oil, vanilla, and water. On low speed, fold in the flour mixture. If you have only one stand mixer bowl, transfer the batter to another bowl and wash the stand mixer bowl and whisk thoroughly—any fat will prevent the egg whites from whipping.

Step 4

In a separate large bowl or the cleaned bowl of the stand mixer fitted with the whisk attachment, beat the egg whites on medium-low speed until foamy, about 30 seconds. Add the salt, cream of tartar, and remaining 1/2 cup sugar. Slowly increase the speed to high and beat until you achieve a glossy meringue that holds firm peaks, 5 to 8 minutes depending on your mixer.

Step 5

Add a 1/4 of the meringue to the batter and mix thoroughly to incorporate (this will lighten it). Add the remaining meringue in 3 batches, gently folding after each addition until only a few streaks of meringue remain (err on the side of undermixing to keep the batter billowy).

Step 6

Transfer the batter to the sheet pan and smooth out with a large offset spatula; be sure to get into the corners of the pan. Bake for 10 minutes, then rotate the sheet pan in the oven for more even baking. Continue baking until the top is golden brown and springs back when gently pressed, 10 to 15 minutes more. 

Step 7

Remove the sheet pan from the oven and slide the cake and parchment paper onto a wire rack to cool. After 10 minutes, invert the cake onto another rack and gently peel off the parchment paper. Let the cake cool completely. 

Step 8

Make the filling: Melt the white chocolate and a 1/3 cup heavy cream in the microwave in 1-minute increments at power 4 until just about melted. Use a small spatula to stir until completely smooth; let cool to room temperature.

Step 9

Place the rest of the cream in a large bowl or the clean bowl of the stand mixer fitted with the whisk attachment. Whisk until thick, then with the mixer running on low speed, add the cooled melted white chocolate. Increase the speed and whip until peaks form. Chill in the fridge for 15 minutes for easier spreading.

Step 10

While the cream is chilling, trim the edges of the cake. Sprinkle on the confectioners’ sugar and use your hands or a pastry brush to spread it out. Cut the cake into 3 sections, each about 12 inches long and just over 5 inches wide. Rinse the raspberries and pat them dry. Reserve 20 berries and lightly mash the rest in a bowl. 

Step 11

To assemble the cake, place one layer on a rectangular serving plate and spread on 1/3 of the filling, then press in half the mashed berries. Repeat with another layer of cake, another 1/3 of the cream, and the rest of the mashed berries. Top with the final cake layer and spread the rest of the cream on top. Garnish with the whole berries, chopped pistachios, and, if desired, rose petals.