Preheat oven to 350 F/190 C/Gas mark 5.

Grease an 8 inch baking pan, then line with parchment paper or dust with flour.

Sift together the flour, salt and baking powder into a bowl.

Bake for 30-35 minutes. Stick a wooden skewer in the middle to see if its done, if skewer comes out clean its cooked through.

Let it cool in pan for 20 minutes before trying to remove it.

Transfer to a cooling rack or plate when cooled slightly.