Wash the lettuce and slice in half lengthwise. Slice a thin layer from the tough base of the lettuce, ensuring all the leaves still remain intact.
Step 2
Heat a griddle pan over a high heat. Brush the lettuce all over with the olive oil and lemon juice and season with salt and pepper.
Step 3
Griddle for 2-3 minutes on both sides or until tender and slightly charred.
Step 4
Whilst the lettuce is cooking, melt the butter in a skillet over a medium heat. Roughly chop the garlic and add to the butter along with the capers and lemon zest. Tear in the anchovies and stir to combine, cooking for 3-4 minutes until fragrant and the anchovies have melted.
Step 5
Spoon the anchovy butter over the charred lettuce to serve.