It was recently brought to my attention that this cake exists: a moist, chocolate sponge topped with a coffee-flavoured coconut layer. My partner had a slice at ScandiKitchen in London so he was the ideal person to try my GF version and confirm it was as rich and tender and satisfying as the OG. In Denmark the cake is called “den du ved nok kage”, which literally means “the cake you-know-what”. My understanding is that versions of this cake are made throughout Scandinavian homes, known by different names and using slightly different ingredients and methods. I think you’ll find my version serves it justice. It might even become your cake-you-know-what.

Overview

First, we’ll combine the cocoa powder with boiling water, then add the milk and xanthan gum (if using a blend without) and blend. Then we’ll cream the butter and sugar, add the eggs, add the cocoa/milk mixture and dry ingredients, then pour the cake into the tin and bake. Then we’ll let the cake cool, remove any doming, melt all the topping ingredients in a saucepan and pour it on top of the cake. Finally, we’ll cover it all with desiccated coconut and serve.

Recipe

Cake

50g dutched cocoa powder
100g boiling water
100g coconut milk OR whole milk (I prefer coconut)
4g (1 tsp) xanthan gum, if your blend does not include any
200g unsalted butter, room temp
225g caster sugar
1 teaspoon vanilla extract
3 eggs
200g GF flour blend (I use Freee Plain White Flour) [see notes for homemade blend]
½ teaspoon (3g) salt
1 teaspoon baking powder

Topping

150g icing/confectioners sugar
50g unsalted butter
1 tbsp (5.3g) dutched cocoa powder
½ teaspoon vanilla extract
60g strongly brewed coffee (instant is fine)
50g desiccated coconut, plus extra to decorate
sea salt flakes (optional)

Method:

Preheat oven to 175°C (350°F) conventional. If your oven only has a fan setting, set to 160°C (325°F). Line a 20x20cm (8x8 in) cake tin.
Measure 50g cocoa powder into a bowl that is a good depth for blending directly inside. Pour 100g boiling water into the cocoa and whisk (this ‘blooms’ the cocoa, ensuring it doesn’t clump and enhances the flavour of the cocoa). Let this cool for five minutes. If using a flour blend without xanthan gum included: Add 1 tsp xanthan gum, whisk, then add 100g coconut milk and use an immersion blender to blend until everything is well-combined and there are no clumps of xanthan gum. If your blend includes xanthan gum: Simply add coconut milk and whisk or blend until smooth.
Cream 200g butter, 225g sugar and 1 tsp vanilla in a stand mixer, on medium, using the paddle attachment, until lighter in colour and the sugar has begun to dissolve. The mixture should look like thick frosting, not whipped cream. Stop before it gets very pale and fluffy (that means you’ve added too much air, which can make the cake rise unevenly and collapse). Add the 3 eggs one by one, taking care they are completely incorporated before adding the next. Scrape down the sides and bottom of the bowl and beat for a minute more to ensure everything is homogeneous.
In a separate bowl, whisk or sift the 200g flour blend, 3g salt and 1 tsp baking powder.
Add the cocoa mixture to the stand mixer bowl and beat until combined, then scrape the bowl again and beat for another minute. Add the dry ingredients and beat until just combined, scrape the bowl, and beat for another minute until everything is well combined and there are no pockets of butter.
Pour the batter into the lined tin and bake in the middle of the oven for 30 minutes, then check. A skewer should come out with a little moisture, maybe a small crumb. Let it keep baking if any raw batter comes out on the skewer.
Leave the cake to cool in the tin.
After an hour or two, when the cake is room temp, remove the cake from the tin and slice off the dome to create a flat surface for the topping and to expose the crumb. If you skip this step, the topping will settle on the edges and the center of the cake will miss out on all that delicious coconut and coffee.
Poke holes in the cake with a skewer or fork if you want the topping to soak into the cake. I prefer to skip this step to have a more distinct topping layer. Combine all the topping ingredients in a saucepan and cook while whisking until everything is melted. Pour the topping all over the cake and use a spatula to spread it around evenely. Top with extra desiccated coconut and flaky sea salt. Leave to set for at least 30 minutes before serving.

Serving Suggestion: With a cup of filter coffee, of course.

Storage: Keep sealed at room temp for 2-3 days.

Notes for Nerds:

I recommend purchasing a scale that detects tenths of grams, because xanthan gum is both very ‘packable’ (ie the quantity can change significantly if compressed or if scooped while fluffy) and very potent, meaning small differences in quantity can impact your bakes. I use a JSR-150 for weighing gum/salt/baking powder/etc. I purchased it from BakeryBits for £17.

I use Freee Plain White Flour here. If making your own blend, I recommend:

62g superfine white rice flour
34g superfine brown rice flour
36g cornstarch
30g tapioca starch
6g potato starch
28g powdered milk
4g (1 tsp) xanthan gum

This is such a fantastic, comforting cake to have on the counter at home. I hope you give it a try and enjoy the best afternoon coffee break of your life.

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