Preheat oven to 180° C for 10 minutes.
Meanwhile, in food processor or in a bowl, mix flours, oats, salt, oil, pickle masala and seasonings. Knead a medium consistency dough with curd/yogurt and keep it aside to rest for 10 minutes.
Divide the dough into 3 equal portions. Now dust the work station or kitchen counter and roll each portion into a big circle, a little thicker than the chapati.
Prick all over so that it doesn't puff up while baking.
Using a cookie cutter or knife cut them into your desired shape and size.
Now lay a parchment paper over baking tray and arrange the rolled crackers on it.
Bake it for around 20 minutes at 180° C in a preheated oven.
Check the cookies after 10 minutes. Once they are nicely browned on one side, turn it upside down. Bake for 10 more minutes till it achieves nice golden brown colour.
Once done, place them on a cooling rack. They will become more crispier once they cool down. Store the cookies in airtight container.