Firstly, boil the potatoes in a pressure pan till 2 whistles. Once the pan is cooled, open the whistle, let the potato cool down and then peel the potatoes.
Meanwhile, boil carrots and green beans in a pan of hot boiling water till they are soft and tender. Alternatively, you can also steam them.
Now drain them in a strainer and let them cool down.
In a small frying pan, heat oil and add chopped onion, capsicum, salt and minced garlic in it. Saute them for 2 minutes till they are cooked nicely and keep it aside.
Take a broad vessel and mash potatoes, add onion, capsicum, and all the spices in the stuffing.
Now add smashed carrots, beans, bread crumbs, and cornflour and mix everything well till all the spices and vegetables are nicely blended.
Keep the stuffing in a bowl and now you are ready to make the kababs. You can also keep the stuffing in the fridge if you want to make these kababs after some time.
Time to shape our kababs, for this we will need ice cream sticks or barbeque sticks. Start by greasing your palm with little oil so that the stuffing doesn't stick to your hands.
Take an ice-cream stick and cover the kababs on the stick nicely, stuffing has to be perfect as shown in the figure. Roll all the kababs in cornflour and keep them ready.
Now take a grill pan, brush it with cooking oil, once its hot start placing the kababs, 4 at a time do not overcrowd your pan.
Apply little oil and cook the kababs on a medium flame from all the sides till they are brown in color.
Finally, repeat the same process with all the kababs and serve them hot with green mint or coriander chutney.