Take 75 gms butter in a pan.
Add 1/3 cup dark chocolate and 1/3 cup milk chocolate to it
Cook the mixture on low flame till it melts.
Add 1/2 cup white sugar and 1/4 cup brown sugar to the mixture and mix them well.
Add 1/4 cup condensed milk to the mixture and mix it together
Add 1/4 cup yogurt (curd) to the mixture and mix it well
Add 1/2 tbsp baking soda and 1/2 tbsp vanilla essence to the mixture.
Mix everything together well.
Take cocoa powder and flour in a Strainer
Sieve 1/3 cup cocoa powder and 1 cup all purpose flour in the mixture.
Mix everything well together.
Add 2 tbsp instant coffee mixture to the prepared batter and mix everything well together
Pour the batter in tray covered with parchment paper.
Bake at 180 degrees in pre heated oven for 30 min. Your brownies are ready. Enjoy!!!