1.Preheat oven to 180°C (160°C fan-forced).
2.Grease a 23cm-square slab cake pan; line with baking paper, extend paper 2cm over sides.
3.In a medium saucepan, add butter and two-thirds of the chocolate, stirring, over low heat for 3-5 minutes, or until smooth. Cool for 10 minutes.
4.Stir sugar and eggs into chocolate mixture, then flours, remaining chocolate, nuts and berries.
5.Spread mixture into pan.
6.Bake for about 40 minutes. Cool in pan before cutting into 25 squares. Serve.
Not suitable to freeze. Not suitable to microwave. Leave the nuts and berries out of this recipe if you just want a plain Blondie. Dust the slice with a little sifted icing sugar, if you like.Note