WATERMELON ROASTED PEPPER AND MOZZARELLA SALAD

• 3 red peppers • 3 tsp olive oil • 4 slices sourdough bread • 1 clove garlic, halved • 1 Mini Watermelon, peeled and cut into bitesized cubes • 1 small red onion, finely sliced • 2 tbsp nonpareille capers, rinsed and drained • 250g mozzarella • 2 tbsp sherry vinegar • 6 tbsp extra virgin olive oil • ½ x 25g pack basil, leaves only