Preheat oven at 160 degrees celsius with both rods and fan on for 12-15 minutes.
Grind oats into powder and transfer into a bowl. Now add whole wheat flour, sugar, cornflour, baking powder, baking soda, salt and vanilla essence. Mix them once.
Then add oil and butter, mix well with dry ingredients.
Add ½ tbsp milk first and bind the dough. If required, add ½ tbsp more milk and make a soft dough.
Now roll the dough into a circle of about ¼ inch thick and cut into the desired shape.
Place cookies on a baking tray lined with parchment paper.
Bake them in a preheated oven for about 15-17 minutes or until they become light brown in colour.
Remove from the oven and let them cool completely.
Store in an airtight container
They stay good for 2-3 weeks.
Video
Notes
1. Preheat oven at least 10-15 minutes before placing the baking tray inside.2. The dough should be medium soft. Add milk 1/2 tbsp at a time if needed.3. Roll out the dough immediately as oats tend to absorb liquid and makes the dough dry.