Add everything but the yogurt and baby spinach to a large (6-quart) crock pot, and stir very well (don't worry, the spinach will cook down).
Place the crock pot on the lowest heat setting, secure the lid, and allow curry to cook for 6 hours.
Add the Greek yogurt and spinach to the curry and stir well. Place the cover back on the crock pot and cook 1 more hour (still on the lowest setting).
Prepare the Aromatic Quinoa:
Add the lamb broth to a medium-sized pot and bring to a full boil.
Add the quinoa and salt, reduce the heat to low, and cover. Allow quinoa to cook for 25 to 35 minutes, or until most of the broth is absorbed.
Remove pot from heat, add the saffron threads and cranberries, and stir well to combine. Place the cover back on the pot and allow quinoa to sit for 10 minutes, allowing the quinoa to absorb any remaining liquid.
Serve Lamb curry with fresh chopped cilantro and aromatic quinoa. Enjoy!
Notes
*Replace chicken broth with any type of broth or stock