Heat oil in a pan and add butter to it.

Then add to it ginger garlic paste, red chilli flakes and roast well.

Then add all the veggies and mix well.

Transfer to the bowl and add black pepper.

Add mayonese and then mix well.

Take a bread piece and spread this mixture on to it.

Then spread butter to the both outer sides of the bread.

Grill the sandwich and then serve with ketchup.