Place milk, dairy spread, flour and nutmeg (if using) into a cold saucepan all at the same time, then bring to the boil over medium heat whisking constantly until thick, smooth and glossy

Stir in cheese until melted. Remove from heat and set aside

Heat oil in a large frying pan. Add chopped onion and garlic and cook over medium heat until soft. Add spices and cook for a further 1 minute or until fragrant

Add beef mince and cook, stirring with a spoon, until browned. Add canned tomatoes and 1 cup of water and simmer for 10 minutes or until thickened

Arrange corn chips on a serving platter and top with warm beef mince. Pour over béchamel sauce. Top with sliced red onion, coriander and sour cream