"Hjónabandssæla, or Icelandic happy marriage cake is filled with delicious stewed rhubarb and topped with soft, oat-filled pastry. So easy to make!..."
INGREDIENTS
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500 g rhubarb (cut into 2 cm slices)
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50 g raw sugar ((¼ cup))
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1 tsp vanilla extract
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4 tbsp maple syrup
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160 g instant porridge oats ((1½ cups))
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220 g plain flour ((1½ cups))
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95 g raw sugar
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55 g dark muscovado sugar
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1 tsp cardamom (ground)
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1 tbsp ground ginger
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¾ tsp bicarb soda
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220 g salted butter (softened)
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1 egg (beaten)
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icing sugar (to dust)
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Double cream (to serve)