Spray large non-stick skillet with cooking spray and add 1 teaspoon of the
olive oil. Combine turkey sausage with egg and lemon peel; mix lightly.
Sprinkle bread crumbs on shallow plate. Shape 1/4 of meat mixture into
flat patty and press into crumbs, lightly coating both sides. Make 3 more
coated patties with remaining meat and crumbs. Brown patties in skillet
over moderate heat, for about 2 to 3 minutes. Add remaining teaspoon of
oil and turn to brown other side evenly. Mix tomato sauce with herbs. Top
each with sauce and a slice of mozzarella.
Serves 4.