Step 1

In a large skillet, heat 1 tablespoon oil over medium-high heat. Add onion; cook and stir until tender, about 3 minutes. Add garlic; cook 1 minute longer. Remove from heat; cool slightly.

Step 2

In a large bowl, combine 1/4 cup marinara sauce with chopped mozzarella cheese, bread crumbs, seasonings and onion mixture. Add chicken; mix lightly but thoroughly. With wet hands, shape mixture into four 1/2-in.-thick patties.

Step 3

In the same skillet, heat remaining 2 tablespoons oil over medium heat. Cook burgers until a thermometer reads 165°, 4-5 minutes on each side. Top with sliced mozzarella cheese; cook, covered, until cheese is melted, 1-2 minutes.

Step 4

Serve on buns; top with remaining 1/2 cup marinara sauce, Parmesan cheese and, if desired, basil leaves.