Add flour and salt to a large bowl, make a well in the centre and add the melted butter
Pour in the boiling water
Combine all the ingredients using a spoon. It will be really hot so don't attempt to mix with your hands just yet
Once it cools a little knead the dough for a 5 minutes until it forms a soft, silky dough
Divide the dough into 12 balls and fill them with about 2 tbsp of dal. Bring the edges together to form a ball.
Roll into circles, very gently. Toast on a non-stick pan on medium heat. Toast one side for a few seconds. Turn it over and toast for another few seconds. Brush the top with butter and turn over again. Repeat this step. Should take about a minute to cook
Place them between a clean kitchen towel or paper towels. If you are not serving it immediately separate them with some parchment or wax paper and re-heat when serving