Method

​1 Preheat your oven to 160°C/fan 140°C/325°F/gas mark 3. Grease the sides of a 9-inch (23cm) cake tin. Place the diced apples in a large bowl and toss with 1 teaspoon of the ground cinnamon and all the lemon juice, then set the bowl to one side.

2 In a separate bowl, place the GF flour, xanthan gum, GF baking powder, salt, remaining ½ teaspoon ground cinnamon. Mix and set aside

3 In another bowl, cream the butter and sugar until light and fluffy with an electric hand whisk. Then add the eggs (beating the eggs in one at a time) and vanilla extract. Now add half of the dry ingredients into the wet ingredients and mix with a wooden spoon until just combined. Then add the other half of the dry ingredients into the mix. The mixture will be thick but light.

4 Place the apples into the cake mix to allow the mix to coat them. The mixture will be very chunky. Transfer this mixture to the cake tin.

5 Cover the cake tin with foil and place in the centre of the preheated oven. Bake for 20 minutes then remove the foil from the tin and keep baking it for another 20 – 30 minutes.

6 Remove from the oven and allow to cool in the tin for 10 minutes before carefully transferring to a wire rack for about 15 minutes before slicing and serving warm. Dust the top of the cake with a sprinkling of icing sugar.