Preheat the oven at 350F for 10mins.
Take potatoes, vegetables, onion, spices, ginger-garlic paste, salt, coriander leaves in a big bowl and mix.
Make small balls from the mix.
Roll the balls in bread crumbs.
Slightly flatten them.
Line them on a greased baking sheet or cast iron pan (Instead of greasing the baking sheet, it can be lined with parchment paper to avoid sticking).
Keep patties on the baking sheet/cast iron pan.
Top each with a little oil (helps in crisping, optional)
Bake at 350F for 15mins then turn them upside down and bake for another 20mins.
Serve with ketchup or as a chaat (I prefer serving as chaat) as mentioned in next steps.