Some bread slices,
Oil for frying
Chicken (boiled and shredded) or potatoes (boiled and mashed) for filling
Mayonnaise or butter
1. Add mayonnaise or butter to the chicken or potato (whatever you are using for filling).
2. Apply some ketchup on the bread slices. Spread the filling on them.
3. Beat the egg and dip the sandwiches in it. Heat oil in a frying pan and fry these sandwiches.
4. To save time, prepare the fillings before hand. You may also try different shapes like triangular, rectangular and even round shaped sandwiches.