From BBC "Good Food" magazine.
175g unsalted butter
250g demerara sugar
100ml maple syrup
3 large eggs
250g selfraising flour
2 tsp baking powder
2 tsp mixed spice
250g parsnips, peeled and grated
1 medium eating apple, peeled, cored and grated
50g pecans, roughly chopped (if you can get hold of them use walnuts)
zest and juice 1 small orange
icing sugar, to serve (optional - I spread the filling on the top)
250g tub mascarpone
3-4 tbsp maple syrup
Heat oven to 180 C. If you want to have a round sandwich cake with the filling you have to use two 20cm round tins and line them with baking paper. I used rectangular 32x19x2cm baking tray lined with paper.
Melt butter, sugar and maple syrup in a pan over gentle heat, then cool slightly. Whisk the eggs into this mixture, then stir in the flour, baking powder and mixed spice. Then add grated parsnip, apple, chopped pecans, orange zest and juice.
Divide between the tins, then bake for 25-30 mins until the tops spring back when pressed lightly. If you use rectangular tray, transfer all mixture into it and bake for approx. 30 minutes. I use wooden toothpick and stick it into a centre of the cake - if it come out dry and clean it means that cake is ready.
Cool the cake slightly in the tin before turning out onto wire racks to cool completely. Just before serving, mix together the mascarpone and maple syrup. Spread over one cake and sandwich with the other. Dust with icing sugar just before serving. Rather than making a sandwich cake I spread the mixture over cooled cake.