First, heat 2 tbsp of oil in a pan.
Then, add onions and fry on high heat till it turns pink.
Now, add beetroot, green peas, carrot, cabbage and sauté well on high heat for a minute. Cover and cook for a 2-3 minutes.
Then, add capsicum, and green chillies.
Next, add garam masala powder, roasted cumin powder, corinader powder, salt, pepper and mix well.
Now, cook for 2 minutes
Lastly, add boiled potatoes, lemon juice or dry mango powder and mix very well. Cook for another minute. Mixture should be dry and everything should get combined well.
Take it off the heat, transfer it on to a large plate or in a bowl and allow it to cool.
Now, put the bread slices in blender or chopper and give it a pulse to make it crumb.
Combine cooked veggies mixture, paneer, bread, milk, coriander leaves, mint leaves. Add some more salt and pepper of needed.
Mix everything well to form a cutlet mixture.
Take a portion into your palm and shape it into a cutlet like tikkis or patties. Cutlets can be of any shape, as per your choice.
Repeat the same for all the mixture and shape them into patties. Refrigerate the tikkis for 30 minutes.