Rinse & drain the beans, then put them into a salad bowl and add 2 tbsp of the oil.
Cut the tomatoes in half, combine with the beans.
Cut the courgette into thin slices using a vegetable peeler. Rub the strips with the remaining oil and grill on both sides (on a BBQ, grill or griddle pan) until lightly charred.
In the meantime, whizz the dressing with a stick blender.
Add the courgette slices to the salad and mix with the dressing. Season with salt & pepper to taste. Toss gently.
Serve warm or at room temperature.