Whisk eggs and add crushed red chilli, salt and food color. Pour mixture in a pan to make omelette. When ready; fold edges of omelette inwards into a square patty, and heat both sides to secure shape.

Fry K&N's Burger Patties as per instructions on pack.

Trim crust of bread slices and spread mayonnaise. Assemble sandwich by stacking potato filling, a slice of cheddar cheese, omelette, another slice of bread, lettuce, fried Burger Patty, another slice of cheese and finally top with a bread slice.

Melt butter in grilling pan and grill both sides of sandwich.

Secure shape with food picks and serve warm.