In a bowl mix together wheat flour and maida and salt.
Add enough water to make soft dough.
Cover and set aside for 1 - 2 hours.
Divide into large lemon sized balls.
Take two balls at a time.
Roll them into a slightly thicker discs.
Apply oil and sprinkle atta on them.
Now place the atta side together and roll it into a thin disc.
Keep on dusting with flour and roll it as much thin as possible.
Heat a tawa and place the rolled disc on hot tawa.
Cook for 1 minute.
Flip it and cook for one more minute.
The roti must have brown spots all over and it will start puffing.
Now you will see the opening on the side which divides both the rotis.
Quickly separate the rotis, fold them into triangles and remove from stove.
Store in a closed container and enjoy!