Rinse quinoa and put in a cooking pot. Add water and cook uncovered on a medium flame for around 15 minutes or until all the water gets absorbed.
Switch off the stove and cover the pot with a lid. Don't remove the lid for 5 minutes, after that fluff quinoa with a fork and keep aside.
Heat oil in a cooking pot. Add mustard seeds and let them splutter.
Add chopped onion and cook until it starts turning brown.
Add ginger-garlic paste and saute for about a minute.
Next, add red chili powder, turmeric powder, coriander powder, ground black pepper, and garam masala. Saute for a few seconds.
Add chopped tomatoes, green chilies, and salt. Mix and cook until the tomatoes turn mushy.
Once the tomatoes are cooked add chopped vegetables.
Saute vegetables for about 1-2 minutes and then add around ½ a cup of water. Mix and cover the pot with a lid. Cook on medium until the vegetables are cooked. The vegetables should be cooked but should remain slightly crunchy.
Add cooked quinoa, mix and cover the cooking pot with a lid again. Leave for 1-2 minutes then switch off the stove.
Garnish with chopped cilantro. Enjoy!