Once all the ingredients are organized proceed by beating the margarine and sugar together. After the margarine and sugar is mixed, add the 2 eggs and mix. Once the eggs have been mixed in then add the self-rising gluten free flower and mix all the ingredients together. When the batter is mixed together pour it into an 8 inch baking pan and bake it for 45 minutes at a temperature of 165C
After the cake has been baked allow for some time to cool then add jam and marzipan on top and enjoy!