Flourless Chocolate Cake with Toasted Hazelnuts

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Recipe Intro From lisathompson

Ideal for chocolate and hazelnut lovers, this easy Flourless Chocolate Cake recipe is a gluten-free dessert that boasts a dense, fudge brownie-like texture. The recipe is a cinch to prepare, requiring minimal effort and just a handful of straightforward ingredients.

Recipe Description

This flourless chocolate cake calls on the flavors of everyone’s favorite fancy candy: Fererro Rocher. This decadent, naturally gluten-free dessert is sure to become an instant classic for Valentine's Day, date night, or special occasions. 

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  • Flourless Chocolate Cake Ingredients
  • Test Kitchen Notes
  • FAQs
  • Recipe Card

Flourless Chocolate Cake Ingredients

All of the ingredients you'll need to make a flourless chocolate cake with hazelnuts.

  • Demerara Sugar

    The inclusion of demerara sugar adds a distinctive depth infusing a rich, molasses-like complexity that enhances the overall taste. You can also use demerara sugar in this pear ricotta galette or this caramel apple cider slab pie.

  • Toasted Hazelnuts

    Hazelnuts elevate the texture and flavor of the cake. They bring a delightful crunch and add a touch of warm aromatics. Feel free to swap an equal amount of toasted almonds, walnuts, or pecans for the hazelnuts. 

  • Mascarpone Cheese

    The light and creamy whipped mascarpone topping complements the dense chocolateiness of the cake.

Test Kitchen Notes

  • Chocolate Selection

    Opt for high-quality dark chocolate with at least 70% cocoa for an intense chocolatey flavor.

  • Toasting Hazelnuts

    Watch hazelnuts closely while toasting to achieve a golden brown hue without burning. Toasting them unlocks their smooth, nutty flavor. If you have extras, make our chocolate hazelnut s'mores!

  • Folding in Egg Whites

    Gently fold whipped egg whites into the chocolate mixture for a light and airy texture in the final cake.

  • Mascarpone Whipping

    Gradually add confectioners' sugar when whipping mascarpone for the perfect sweetness and fluffiness, being cautious not to overmix.

  • Cocoa powder

    Be sure to spoon and level your cocoa powder if you're measuring with cups. Weighing your ingredients is a pastry chef's secret to more consistent results.

FAQs

Can I use any type of chocolate for a flourless chocolate cake?

Is it possible to make a flourless chocolate cake without eggs?

Can I replace sugar with a sugar substitute in a flourless chocolate cake?

Why does my flourless chocolate cake sink in the center?

Can I freeze a flourless chocolate cake?

What can I serve with a flourless chocolate cake?

Can I add nuts or other mix-ins to a flourless chocolate cake?

Prep time 20mins
Cook time 50mins
Serves or Makes: 8-10 servings

Recipe Card

For the cake

ingredients

  • 6.4 ounces (181g) dark chocolate, chopped
  • 1 1/2 sticks (178g) unsalted butter
  • 3 ounces (86g) toasted hazelnuts
  • 6 large eggs, separated, at room termperature
  • 1 teaspoon vanilla extract
  • 1 1/4 cups (218g) organic sugar in the raw
  • 1 cup (67g) cocoa powder
  • 1/2 teaspoon kosher salt

For the whipped Mascarpone

ingredients

  • 8 ounces (226g) mascarpone cheese, room temperature
  • 1/2 teaspoon vanilla extract
  • 2 tablespoons whole milk or heavy cream
  • 3 tablespoons (23g) organic confectioners' sugar

Method

  • Step 1

    Preheat the oven to 350°F. Spray an 8” cake pan liberally with nonstick spray to grease the pan.

  • Step 2

    Melt the chocolate and butter in a medium bowl set over a small pot of simmering water. Once completely melted, stir in chopped hazelnuts and set aside to cool slightly.

  • Step 3

    Meanwhile, whip the egg whites to stiff peaks in the bowl of an electric mixer fitted with the whisk attachment. Stir in the vanilla extract.

  • Step 4

    Add the egg yolks and sugar to the cooled chocolate mixture, whisking vigorously to incorporate some air.

  • Step 5

    Sift together the cocoa powder and salt into the chocolate mixture and gently fold until no dry spots remain.

  • Step 6

    Stir in ⅓ of the whipped egg whites into the chocolate mixture to loosen it, then, working in two batches, gently fold in the remaining egg whites.

  • Step 7

    Pour the batter into the prepared pan and place the pan on a baking sheet (this acts as extra insurance in case your cake overflows in the oven).

  • Step 8

    Bake for 25-30 minutes, until the cake has puffed up and a toothpick comes out with a few moist crumbs when inserted into the center.

  • Step 9

    Remove it from the oven and allow the cake to cool completely (it’s normal for the cake to sink a bit).

  • Step 10

    Before serving, whip mascarpone with vanilla extract, milk or cream, and confectioners sugar in the bowl of an electric mixer fitted with the paddle attachment until light and fluffy.

  • Step 11

    Remove the cake from the pan, dust it with confectioners' sugar, and cut it into 8 slices.

  • Step 12

    Serve each slice with a dollop of the whipped mascarpone.