Sift the sathumaavu flour along with spice powders, salt and baking powder 2-3 times.
In another bowl, mix oil with jaggery powder and 1 tablespoon water and whisk until smooth and lump free.
Mix the dry ingredients with wet ingredients and mix to form a tight dough. If the dough is very dry, use a few drops of water to loosen it up. If the dough is very sticky, add a little flour to bind it together.
Cover the dough in cling wrap and refrigerate for 10-15 minutes. Do not refrigerate the dough for longer or else it will become too dry to roll out.
While the dough is in the fridge , preheat the oven at 180 degrees Celsius for 10-15 minutes.
Remove the dough and place it between two sheets of parchment paper and roll out into a sheet of 1/4 inch thickness with the help of rolling pin.
Cut out cookies of desired shape with the help of cookie cutters and arrange them on a baking tray. Bake the cookies at 180 degrees Celsius for 10 minutes per batch either in an oven or a microwave oven in convection mode.
The cookies will look soft while they are hot , but they harden as they cool down, so do not increase the time of baking. Let the cookies to cool on a wire rack.
Transfer the cookies to an air tight container.