In a medium bowl combine yoghurt, cheese, olive oil, 1 tblsp milk & salt, mix well until combined.
Add flour and mix lightly until the mixture comes together as a dough, adding extra milk if required.
Divide the dough into 4 equal portions (I use my kitchen scales for this) then take each piece of dough and lightly roll it into a ball, then on a lightly floured surface roll it out into a 22 cm / 8" circle (see notes) & repeat for remaining portions.
Heat a non-stick fry pan over medium high heat (without oil) and lightly spray one side of one flatbread round with olive oil spray, then place it oil side down in the pan & fry for 1 min 30 seconds.
As the flatbread is frying, lightly spray the remaining side with olive oil spray, turn and fry the remaining side for 1 min 30 seconds (see notes).
As they cook, remove the flatbreads to a plate & cover them with a clean tea towel (see notes).