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+ servings
Flourless walnut cake on a cake platter.

Flourless Walnut Cake with Coffee + Spice Versions

Course: Dessert
Cuisine: Italian
Season: Bounty (August - October), Evergreen (April - July), Mist (November - March)
Dietary: Dairy-Free, Gluten-Free
Preparation: Baking
Prep Time: 15 minutes
Cook Time: 50 minutes
Total Time: 1 hour 5 minutes
Servings: 12
Flourless Walnut cake is tender and delicious just as written, but the addition of coffee or baking spices takes it next level-- One recipe with three variations-- plain, Coffee, or Spice-- to suit your mood. Three primary ingredients, a few simple steps, and you'll have beautiful dessert cakes all winter.
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Ingredients

  • 2 cups walnuts, ground (instructions below) 8 ounces
  • 7 large eggs room temperature
  • 1 cup white sugar
  • ½ teaspoon salt
  • ¼ teaspoon cream of tartar
  • 1 teaspoon pure vanilla extract

Flavoring Options

Coffee Glaze, Optional

  • 3 cups confectioners sugar
  • 1 teaspoon finely ground coffee beans
  • 5 tablespoons warm or hot strong brewed coffee
  • ½ teaspoon pure vanilla extract

Instructions

Flourless Walnut Cake

  • Preheat oven to 350°. Generously butter and flour (or use very finely ground walnuts) a 9-inch springform pan. Wrap the bottom of the pan with foil to catch any butter that melts out in the oven.
  • In a food processor, finely grind the walnuts. This will likely take only 8 -10 pulses. Stop just as they begin to clump. (Any further and you'll make walnut batter, not quite what we are after). Set the ground walnuts aside.
  • Seperate the eggs, placing the yolks in the bowl of a stand mixer with the whip attachment. Beat the yolks with the sugar and salt 6-8 minutes until the mixture is fluffy and pale yellow. (You'll be glad you let your eggs come to room temperature for this-- the sugar more readily dissolves in eggs that are not cold.)
  • If you are making a plain flourless walnut cake, move on to step five. If you are making either a walnut-spice cake or a coffee flavored cake, add the spice mix or the finely ground coffee beans now and mix in thoroughly.
  • Remove the mixing bowl from the stand mixer and with a silicone or rubber spatula, fold the ground walnuts into the yolk mixture.
  • In a separate clean bowl free of any oils or grease, whip the egg whites, cream of tartar, and vanilla to medium peaks. (The cream of tartar helps stabilize the whipped egg whites.) Gently fold about a third of the egg whites into the walnut mixture. Then, whip the remaining egg whites once again until they just reach firm peaks. Fold them gently into the walnut mixture in two batches, folding until no more white streaks remain.
  • Place the cake batter into the prepared pan. Place the pan on a baking sheet. Bake for 40-50 minutes, or until the cake is puffed, set (not jiggly) in the middle, and a cake tester (I use a bamboo skewer for this) inserted in the middle comes out clean.
  • Allow the cake to cool in the pan about 20 minutes before removing the springform ring. The cake will have sunk in the center and formed charming cracks and crags, perfectly normal for this rustic meringue-style cake.
  • Decorate with seasonal fruits, a dusting a powdered sugar, or the coffee glaze below. Seve with whipped cream.

Coffee Glaze

  • Place the sugar in a medium mixing bowl. Add the vanilla and coffee, tablespoon at a time, and whisk until a glaze forms. It should cling to the whisk and drip off in thick long ribbons. Adjust by adding more powdered sugar or water to make it thicker or thinner. Drizzle the glaze from the whisk around the edges of the cake, allowing some to flow toward the center of the cake and some to drip off the edges. Allow the glaze to set for an hour before covering or serving.

Notes

To make the Coffee Glaze a Spice Glaze, replace the ground coffee with one teaspoon of the same spice blend you use in the cake, and replace the brewed coffee with warm or hot water.
Garnish the spice cake with fresh fig halves, lightly roasted (6 minutes at 350, just to soften) plum prunes, tiny grape clusters, and/or unsprayed organic food-safe flowers or flower petals.