Place all the dry ingredients in a bowl and blend well.
Add the oil and egg and stir until combined.
Add the boiling water, gradually until you have a dough. Firm up with your hands.
Roll out the dough by placing it on a piece of parchment paper, place another piece of parchment paper on top, then roll out.
Cut out circles to cover the muffin tin spaces (I used a wine glass, but a large cookie cutter would do too).
Place the circles in a greased mini muffin tin and ensure that all the sides are covered with the dough.