Pre heat oven to 180°C / 350°F / Gas Mark 4. Grease a round cake tin of your choice.
Mix the flaxseed egg and oil together in a large mixing bowl.
Add the mixed spice, cinnamon, sugar and salt to the bowl. Mix well.
Sift in flour and baking powder. Not all the flour will go through the sieve if using wholemeal. Just pour the bits in to the bowl that don’t go through. Mix well.
Add the water to make a batter. If it is too dry, add more water.
Now the batter is made, spread around a ¼ of it into the tin. (this prevents the apples sticking to the bottom of the tin)
Put the chopped apples and sultanas (if using) in a separate bowl. Sprinkle some of the flour over them and mix in. This will help to stop them sinking in the cake.
Mix the apples and sultanas in with the rest of the batter.
Pour the batter with the apples into the tin.
Sprinkle the 2 tablespoon brown sugar over the top of the cake.
Bake for 35-45 minutes or until you get a clean skewer when you pierce the cake all the way through.