Add some olive oil to a pan, bring to medium heat and fry the baguette slices for a minute on each side. Sprinkle over the herbs and toss to coat evenly until the bread is lightly browned. Transfer to a baking tray and keep warm in a cool oven (100°C/212°F).
Keep the pan with the oil to fry the halloumi.
Make the dressing
To make the dressing, put the yolk, crushed garlic, Worcestershire sauce, mustard, anchovies, and white wine vinegar (or lemon juice) in a blender and process until smooth.
Turn the speed down and slowly pour in the groundnut oil until the dressing has emulsified. Empty the contents into a bowl and add the grated parmesan and whisk together. (Add some optional paprika or tabasco to taste)
Make the salad
Tear the bottom of the lettuce stalks off and separate the leaves. Place the leaves in a large bowl and pour over the dressing and mix so that the dressing coats each leaf.
Arrange the leaves between two bowls and place the croutons on top.
Fry halloumi
Cut the halloumi lengthways into 8-10 equal slices. Using the same pan used to fry the croutons, fry the halloumi slices on high heat for 1 minute on each side until browned and serve immediately on top of the dressed leaves.