Slice the leeks in halve rings, and give them a good rinse! Heat the oil in a deep pan and fry the leeks for about 4 minutes on medium heat.
Mince the garlic and take the leaves of the thyme sprig (pull your fingers along the sprig from the tip downward). Add to the pan and fry everything for another 2-3 minutes until everything is soft.
Add the orzo, stock and miso to the pan. Stir until the miso is dissolved. Then drain the can of lima beans and add to the pan.
Turn down the heat a bit and let softly boil for another 8-10 minutes. Stir occasionally so the orzo doesn't stick to the bottom of the pan. Enjoy!