Preheat oven to 175°C. Grease and line an 8" square cake tin.
In a bowl mix together choco chips and butter.
Either on a double boiler or in a microwave, melt them together.
Add in vanilla and cocoa powder and mix well.
In another bowl mix together flour, salt and baking soda. Keep aside.
In a mixing bowl, take sour cream, milk and sugar.
Whisk together to combine.
Add in the melted chocolate mixture and whisk until incorporated.
Now finally add the flour mixture and mix well.
Pour it into the cake tin and top it with the nuts.
Bake for 30 minutes. Remove fro oven and allow it to cool on wire rack for 10 minutes.
Remove the brownie along with the paper lining and place it on the wire rack.
Once cool slice it into squares.
Serve and Enjoy!!!
