I've always loved hazelnuts, but really began using them in baking when we lived in the Pacific Northwest. Oregon is one of the biggest producers of this nut and I began seeing them at our farmer's market--from whole nuts to hazelnut flour, so when I found this recipe from Cook's Country, I knew I wanted to try it.
This cake is characteristic of a dacquoise recipe with its light texture from whipped egg whites and the buttercream frosting, which can be tricky to make, is made easy using marshmallow fluff! Instead of toasting and grinding the nuts into a delicate flour, I took a shortcut and purchased Toasted Hazelnut Flour from King Arthur Flour...your choice.
Swiss Hazelnut Cake
Preheat oven to 350F-degrees. Line 2 9-inch round cake pans with parchment paper, grease just the parchment, but not the pan sides.
1/2 cup (2 ounces) skin-on hazelnuts, toasted and cooled
Process hazelnuts in a food processor, until finely ground, about 30 seconds.
1 1/4 cups (5 ounces) King Arthur all-purpose flour
1 cup (7 ounces) granulated sugar
1 1/2 tsp. baking powder
1/2 tsp. salt
In a large bowl, whisk all of these ingredients together, including the ground hazelnuts. Set aside
1/2 cup vegetable oil
1/4 cup water
3 large egg yolks
2 1/2 tsp. vanilla extract
In a medium bowl, whisk these "wet" ingredients together, then add them to the dry ingredients in the large bowl, mixing until a smooth batter forms.
5 large egg whites
1/4 tsp. cream of tartar
Using a stand mixer fitted with the whisk attachment (or a hand-held mixer) whip egg whites and cream of tartar on medium-low speed until foamy, about 1 minute. Increase speed to medium-high and whip until soft peaks form, 2 to 3 minutes. Gently whisk one-third of the whipped egg whites into the batter. Using a rubber spatula, gently fold in remaining egg whites into batter until incorporated.
Let cakes cool in pans for 15 minutes. Run a knife around edges of pan; invert cakes onto a wire rack. Discard parchment and let cakes cool completely.
24 ounces (3 sticks) unsalted butter, softened
1/4 tsp. salt
1 3/4 cups (7 ounces) confectioners' sugar
12 ounces ( 2 3/4) cups) Fluff brand marshmallow creme
2 T hazelnut liqueur (optional)
Using a stand mixer fitted with the whisk attachment, whip butter and salt on medium speed until smooth, about 1 minute. Reduce speed to low and slowly add the confectioners' sugar. Increase speed to medium and whip until smooth, 2 minutes, scraping the sides of the bowl with a rubber spatula as needed. Add marshmallow creme, increase speed to medium-high, whip until light and fluffy, 3 to 5 minutes. Reduce speed to low and add the hazelnut liqueur, if using, and whip to incorporate, about 30 seconds.
Frost bottom cake layer, add the second layer spreading evenly over top and sides. The cake called for bittersweet chocolate shavings sprinkled over the top and sides, but I only had enough to sprinkle on the top:-( It was still pretty--Enjoy!
The weather was a little cooler...not much, but I'll take it after the long hot summer. Are you making changes for the fall weather in your home or with your baking?