Pre-heat the oven to 180 degrees,
Whisk together the butter and sugar until light and fluffy using an electric hand whisk or food processor,
Whisk in the eggs, one at a time,
Fold in the flour, the vanilla and the spices,
Add a splash of orange juice to loosen the cake mixture,
Stir through the mixed peel then place the cake batter into a square brownie tin lined with baking parchment,
Dot over the chunks of Marzipan pushing them in lightly to the cake mix,
Bake in the pre-heated oven for 35-40 minutes,
When completely cool, dust a generous layer of icing sugar over the top of the cake and cut into small squares.