Preheat oven to 350°F (180°C) and grease a 9-inch (22 cm) cake pan.
Melt the dark chocolate over a double boiler, then let it cool slightly.
Cream the butter and sugar together until light and fluffy. Add the egg yolks one at a time, then stir in the melted chocolate.
Whisk together the flour and baking powder, then gently fold into the chocolate mixture.
In a separate bowl, whisk the egg whites until stiff peaks form. Gently fold the egg whites into the batter.
Pour the batter into the prepared cake pan and bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean. Let the cake cool completely in the pan before removing.
Slice the cake in half horizontally. Spread the bottom layer with apricot jam. Spread apricot jam thinly over the top and sides of the cake.
Melt the dark chocolate for the coating, then stir in the heavy cream until smooth. Pour the glaze over the top and sides of the cake, spreading evenly.
Refrigerate the cake for at least 1 hour to allow the glaze to set. Slice and serve.
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.