Step 1: Take a bowl add curd + chat masala + chilly flakes + black pepper .Mix them all together .Now take bread slices and spread curd on it . Dip 2 slices of onion and tomato each in curd and arrange on bread slices .Take another bread and spread curd on one side and close your sandwich and fry it .
Step 2: <note at the of arranging tomatoes n onions put cheese slices if needed.> enjoy !! Yummy curd sandwich !!