Mix the lettuce, onion, tomato and blue
cheese together in a bowl and set aside.
Heat a griddle or barbecue until hot.
Season the steaks with a little salt and
generously with pepper, then cook for
2 mins on each side for medium-rare, or
until done to your liking. Remove the steaks
to a plate to rest for a few mins. Meanwhile,
toast the bread on the griddle or barbecue
until crisp on both sides, then rub well with
the garlic. Toss the salad with the mustard
dressing and serve alongside the steak and
warm, garlicky bread.