Using an electric mixer, combine butter with jaggery until mixed well.
Beat in the milk.
In a separate bowl, mix together flour, baking soda and rolled oats.
Add the dry ingredients to the butter mixture and mix until blended.
Add chocolate chunks, walnuts and cranberries. Using a spatula or a whisk, carefully mix them into the batter.
Spread the dough on a skillet. Generously sprinkle with sea salt. Place the skillet on the baking tray and bake for 15-20 minutes or until the edges of the pizookie become golden brown.
Recipe by Bake with Shivesh at https://bakewithshivesh.com/oats-and-walnut-skillet-cookie/