Put the lettuce in a bowl, drizzle with a little of the olive oil, then season. Place a griddle pan on a high heat. Griddle the lettuce for 30 secs-1 min per side or until slightly charred.
Remove to a plate. Combine the balsamic vinegar and syrup with some seasoning, then whisk in the remaining olive oil to make a dressing. Drizzle the dressing over the lettuce. Crumble the feat cheese on top of the salad and serve.