

I’m wasting no time in sharing with you this delicious hazelnut and gianduja galette des rois recipe. January isn’t over yet, so here’s a good excuse to eat some more!
This year, I wanted a change from the traditional frangipane galette des rois (which I also made, by the way — still as good as ever). And I fancied hazelnut! I went all-in on hazelnut in every preparation: pastry cream made with hazelnut plant-based drink (Alpro), hazelnut cream, gianduja (made with hazelnuts, naturally) and caramelised hazelnuts. Obviously, if you’re not a fan of hazelnuts, I’m almost tempted to tell you to move along, or to take a look at my more classic frangipane galette des rois recipe.
I used shop-bought puff pastry to lighten the workload a little. Picard’s is excellent, I recommend it! But you can of course make your own homemade puff pastry — I advise you to make an inverse puff pastry, more melt-in-the-mouth and perfect for the galette.
Personally, I loved this galette and will definitely make it again! (my colleagues really liked it too, even though we ate it a little too hot, unfortunately). The hazelnut flavour is (obviously) very present and it’s a real delight! Enjoy it warm so that all the flavours develop wonderfully!
Ingredients & Method
6 components · Full recipe
Gianduja (can be made in advance)
- 100 g (3.5 oz) shelled and roasted hazelnuts
- 100 g (3.5 oz) icing sugar
- 100 g (3.5 oz) milk chocolate
Toast the hazelnuts in a preheated oven at 150°C / 300°F for about 10 minutes.
Remove from the oven and allow to cool.
Rub the hazelnuts between your hands to remove as much of the skin as possible (a little left is fine).
Place the milk chocolate in a bowl and melt it in the microwave.
Blend the hazelnuts with the icing sugar.
Add the melted milk chocolate and blend again until you obtain a smooth, supple paste (taste it — it’s divine ^^).
Transfer half of the gianduja into a piping bag fitted with a smooth tip of about 8 mm in diameter. Keep the remaining gianduja in an airtight container covered with cling film. It can be stored for several weeks in the fridge. It will harden — that’s normal.
Caramelised Hazelnuts (can be made in advance)
- 75 g (2.6 oz) roasted hazelnuts (skinned)
- 37 g (1.3 oz) caster sugar
- 9 g (0.3 oz) water
- 3 g (0.1 oz) salted butter
In a saucepan, cook the sugar with the water to 115°C / 240°F (without a thermometer, just wait for small bubbles to appear).
Pour the hazelnuts into the sugar syrup and let them caramelise over medium heat, stirring constantly.
Add the salted butter.
Tip out onto a baking mat and set aside at room temperature.
Hazelnut Pastry Cream
- 125 ml (4.2 fl oz) Alpro hazelnut plant-based drink
- 35 g (1.2 oz) caster sugar
- 50 g (1.8 oz) eggs (1 egg)
- 15 g (0.5 oz) cornstarch
- 1/2 vanilla pod
In a bowl, whisk together the whole eggs and sugar until the mixture lightens.
Add the cornstarch and mix well.
Bring the hazelnut plant-based drink (or milk) to a boil in a saucepan with the vanilla seeds and pod. Place a fine-mesh strainer over the bowl and pour the hot liquid in a thin stream, whisking constantly, to loosen the cream. Pour everything back into the saucepan.
Whisk over medium heat for about 2 minutes until the cream thickens.
Pour into a shallow dish and cover with cling film pressed directly onto the surface. Allow to cool at room temperature first, then refrigerate while you prepare the rest.
Hazelnut Cream
- 50 g (1.8 oz) softened butter
- 50 g (1.8 oz) caster sugar
- 5 g (0.2 oz) cornstarch
- 50 g (1.8 oz) eggs
- 50 g (1.8 oz) ground hazelnuts
- 1 pinch of fleur de sel
Place the softened butter in a bowl and beat until creamy and smooth.
Add the sugar, eggs, ground hazelnuts, cornstarch and fleur de sel.
Mix to obtain a smooth paste, but do not beat for too long. Refrigerate.
Hazelnut Frangipane Cream
- the hazelnut cream (above)
- 65 g (2.3 oz) hazelnut pastry cream
In a bowl, whisk the cooled pastry cream until smooth. Weigh out 65 g (2.3 oz) and stir it into the hazelnut cream. Mix quickly — if you beat the frangipane for too long, it will puff up during baking (this is what happened to me a little).
Transfer the hazelnut frangipane cream to a piping bag fitted with a 1 cm (0.4 in) smooth tip. Set aside.
Assembly
- 2 puff pastry rounds (or one homemade inverted puff pastry)
- the hazelnut frangipane cream
- the gianduja
- caramelised hazelnut pieces
- sugar syrup
- 1 dried bean (fève)
Unroll the first puff pastry round and prick it all over with a fork to prevent it from puffing up too much during baking. Pipe the hazelnut frangipane in a ring starting from the centre of the pastry, leaving about 5–6 cm (2.4 in) free around the edge. Pipe the gianduja in 2 rings spaced a few centimetres apart, then add a dab of gianduja in the very centre. Scatter over the caramelised hazelnut pieces. (I had mixed the hazelnut pieces into the cream but found it harder to pipe — some larger pieces wouldn’t pass through the tip.)
Place the dried bean towards the edge.
Moisten the border (the area without frangipane) with a little water.
Cover with the second puff pastry round, aligning the two rounds carefully. Press the edges together firmly, pushing the frangipane filling inward.
Trim the excess pastry using a ring mould or a bowl (as I did). Crimp the edge with a knife to prevent the king cake from opening (run the back of a small knife all the way round the edge). Brush the top with egg yolk diluted with a few drops of water — be careful not to glaze the edges, as the puff pastry won’t rise there. Refrigerate while you preheat the oven to 180°C / 350°F.
Remove the king cake from the fridge and glaze the top a second time. Make a small hole in the centre for steam to escape.
Decorate the top with a knife, using the central hole as a starting point. Bake for about 30 minutes, keeping a close eye during the last few minutes to prevent over-browning (with the double glaze it colours very nicely).
While the king cake is baking, prepare a sugar syrup: heat 20 g (0.7 oz) water and 20 g (0.7 oz) sugar in a small saucepan until dissolved, then leave to cool.
As soon as the king cake comes out of the oven, brush the top with the sugar syrup.
Leave to cool on a wire rack. Best served warm.
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