Basil-Stuffed Chicken Breasts

Ingredients

• 4 skinless boneless chicken breast halves (about 140 g each)
• 100 g mozzarella cheese (thinly sliced)
• 1 tomato (thinly sliced)
• 1 garlic clove (crushed)
• 1 bunch fresh basil (about 20 g)
• 4 slices prosciutto (about 55 g in total)
• 1 tbsp extra-virgin olive oil
• salt and fresh-ground black pepper
• 2 tbsp extra-virgin olive oil
• fresh juice of 1/2 lemon
• 125 g gourmet mixed salad leaves
• 1 bunch fresh watercress (large stems discarded)