Step 1Preheat oven to 200°C. Heat the oil in a large frying pan over medium-high heat. Cook half the chicken for 2-3 minutes each side or until golden. Transfer to a plate. Repeat with remaining chicken, reheating the pan between batches.Step 2Top the chicken with mozzarella. Wrap a piece of prosciutto around each piece of chicken. Tie with kitchen string to secure.Step 3Spread the pasta sauce over the base of a baking dish. Arrange the chicken over the sauce. Bake for 20 minutes or until the chicken is cooked through. Tuck thyme sprigs under the string. Serve with mashed potato.