Heat kadai or wok on high. Add oil.
Once oil is hot, add onions. Cook until translucent.
Add okra and green chilis. Lower heat to simmer.
Sautee for a minute or so.
Add turmeric, red chili powder, coriander powder, amchur, and salt. See note above in Timmi's Tips and Tricks if using frozen okra.
Cover with a lid and allow everything to cook until tender. Check on everything and stir periodically during this time.
Once the okra is tender, add garam masala and stir to mix.
Garnish with cilantro and enjoy!