Place flour, yogurt, butter, yeast, milk and salt in a large bowl.
Using a spoon, combine the ingredients, then use clean hands to bring everything together and form a sticky dough.
Cover and place in a warm spot for about 1 hour or until doubled in size.
Dust a clean work surface with flour, and tip out the dough.
Knead for two minutes.
Divide the dough into 4 equal portions.
Place one portion on a flat work surface, and roll out into a thin disc, roughly 3mm thick.
Using a round cookie cutter, cut out circles. Shape the circles into oval shaped naans.
Remove the extra dough, and roll it again into 3mm thick discs. Cut out more circles from the dough.
Repeat the process to make about 20-25 circles.
Meanwhile heat a grill pan over medium heat.
Place naans in the pan, in batches, and cook for about 3-4 minutes or until cooked through.
Serve with your favorite dip.