Gather all the ingredients for the recipe.
Cut ends of beans and then chop them into small pieces. You can either chop them into small or long pieces as per choice.
Also, peel off the potato and dice it. Onions are finely chopped for the recipe.
Heat the pan over high heat and add oil into it.
Once oil is hot, add mustards seeds and let them sizzle for few seconds.
Next, tip-in onions into the pan. Stirring continuously until onions are softened.
Add diced potatoes and season with salt, turmeric and red chilli powder.
Combine everything until mixed well.
Deglaze the pan with few spoons of water.
Cover the pan and allow potatoes to cook on medium heat.
Once potatoes are cooked almost 80%, add chopped green beans into the pan.
Add garam masala and combine everything together.
Cover the pan and let it cook over medium heat.
Allow it to cook on medium heat for another 8-10 minutes.
Occasionally, open the lid and stir everything together.
If required, add few spoons of water to deglaze the pan.
Simmer it until beans are cooked and water evaporates (if any).
Once beans are cooked as desired, turn off the heat.
Our stir fired green beans veggie is ready to serve.