Chocolate Brownies

I saw these on Nigella on Cooking channel. OMG they are the best brownies I have ever had. With the chips inside these brownies melt in your mouth. What is more perfect then a chocolaty brownie and a glass of milk...

Ingredients
12oz best-quality bittersweet chocolate

6 eggs

1 3/4c superfine sugar

1tbsp pure vanilla extract

1 1/2 cups plus 2 tablespoons all-purpose flour

1 teaspoon salt

1/2 cup white chocolate chips
1/2 cup semisweet chocolate chips

Method

Preheat the oven to 350° Melt butter and dark chocolate together in a large heavy based pan over  low heat.

In a bowl beat the eggs together with the superfine sugar and vanilla extract. Allow the chocolate mixture to cool a little, then add the egg and sugar mixture and beat well. Fold in the flour and salt. Then stir in the white chocolate chips, and the semisweet chocolate chips. Beat to combine then scrape and pour the brownie mixture into the prepared pan 11 1/4 inches by 9 inches by 2 inches greased or sides and base lined with baking parchment. Bake for about 25 minutes.