Gluten Free Apple and Berry Cake

A good friend of mine is gluten intolerant and I continue to make cakes that have gluten in them, so to make up for constantly making food she can't eat, I made her a cake she can.
I don't think I could do it, not eat gluten I mean, I love my bread and cakes to much. I know there are all these special products and flours you can buy these days but imagine going to the local bakery and not being able to buy a loaf of bread or a cake. Thats my kind of nightmare.
I am going to try to experiment with different flours as the flour I used tasted like it had to much soda in it, Ally said she couldn't taste it, so I think you must just get use to the taste. If anyone out there knows if it was the flour I used or just the way it is with all gluten flours I would love to know. Also can you recommend a good Gluten free flour to use?

Enjoy xxx

Gluten Free Berry Cake

150g butter

1 cup brown sugar

1/4 cup treacle

3 eggs

2 cups gluten free self raising flour

1 teaspoon cinnamon

1 teaspoon ginger

2 small apples (grated)

1 cup of berry's fresh or frozen 

Pre heat the oven to 170°C

Cream the butter and sugar together, then add the treacle and the eggs and stir to combine. Sift in the flour, cinnamon and ginger. Add the grated apple and berry's.

Pour the mixture into a lined 20cm cake tin and cook for 50 minutes or until cooked.

Serve with cream and crushed berries