Preheat oven to 180 degree C.
Take butter in a bowl. Add both sugar and cream till smooth.
Add in yogurt and mix well.
Add in flour, baking soda, salt and chocolate chips and mix well.
Place it in a parchment lined baking pan and flatten it.
Bake in preheated oven for 12 to 15 mins.
Remove and cool a little, Cut into bars