Fudge Brownies

Ingredients:
2 eggs
2 teaspoons vanilla essence
125 g brown (demerara) sugar
125 unsalted butter (includes butter for greasing)
75 g plain flour
200 g dark chocolate, chopped
100 g white chocolate, chopped
100 g pecans or walnuts, chopped
1 tub (142 ml) sour cream

Method:

1. Preheat oven to 180°C and use some of the butter to grease a square baking tin (about 25 x 25 cm). 
2. Mix sugar, eggs and vanilla thoroughly in a bowl. 
3. Melt butter gently in a pan over medium heat until liquid. Whisk into egg mixture. 
4. Sift in flour. 
5. Put dark chocolate pieces in microwave for 2 minutes (or until melted); or melt chocolate bain-marie style if you don't have a microwave. 
6. Stir melted dark chocolate, white chocolate pieces, chopped nuts and sour cream into above egg mixture. 
7. Pour into baking tin and bake for 35–40 minutes or until a knife inserted in the middle comes out clean.