White Chocolate Sweet Potato Cake is inspiring and engaging consumers with unique lifestyle content across multiple media platforms and high-quality products available at numerous retail outlets. From Martha Stewart

Ingredients 

Serves 8-10

2 pounds (about 3) sweet potatoes

1 1/4 cups vegetable oil

Unsalted butter, for pans

2 cups cake flour, (not self-rising), plus more for pans

4 large eggs

2 cups sugar

2 teaspoons baking powder

1 teaspoon salt

1 tablespoon ground cinnamon

1 teaspoon ground nutmeg

2 teaspoons pure vanilla extract

3 tablespoons brandy

1 1/2 cups unsalted macadamia nuts, toasted,

coarsely chopped

1 pound white chocolate

2 cups heavy cream

Method 

1. Heat oven to 400 degrees. Coat potatoes with 1/4 cup vegetable oil, and place on baking sheet. Bake until tender, 30 to 40 minutes. When cool enough to handle, remove skin, and mash flesh with a fork into coarse purée.

2. Lower oven temperature to 325 degrees. Butter two 8-by-1 1/2- inch round cake pans, dust with flour, and set aside. In the bowl of an electric mixer fitted with the paddle attachment, beat eggs and sugar together on medium-high speed until light and fluffy, about 5 minutes. 

3. Add remaining 1 cup vegetable oil; beat on medium speed until well combined. Add the cooled sweet potatoes; mix until combined.

4. Sift together cake flour, baking powder, salt, cinnamon, and nutmeg; mix into sweet potato mixture. Mix in vanilla and brandy until combined. Remove batter from mixer; fold in 1 cup macadamia nuts by hand.

5. Evenly distribute cake batter into prepared pans, and transfer to the oven. Bake until a toothpick inserted into center comes out clean, 40 to 45 minutes. Let pans cool on a wire rack 10 minutes. Invert cakes onto rack; cool completely, about 1 1/4 hours.

6. Meanwhile, chop white chocolate into small pieces, transfer to a large bowl and set aside. Bring 1 cup cream to a boil; pour over chocolate, whisking until chocolate is melted. Chill for 30 to 40 minutes.

7. When chocolate mixture has cooled, pour remaining cup cream into an electric mixer; whip on medium until soft peaks form, about 3 minutes. Fold whipped cream into chocolate mixture until fully incorporated.

9. Cut each cake layer in half horizontally, creating four layers. Spread 2/3 cup white chocolate frosting on one layer, then stack next layer on top, and frost. 

10. Repeat frosting-and-stacking process until each layer is frosted. Spread remaining frosting on sides and top of cake. Arrange remaining 1/2 cup macadamia nuts on top of cake, and serve.