Easy Chicken Parmesan Casserole recipe is the perfect weeknight meal. Made with marinara sauce, parmesan cheese, mozzarella cheese, and topped with crunchy croutons for the extra crunch.
Cook the pasta according to the directions of the back of the pasta package. Drain and set aside once finished.
While the pasta is cooking pound your chicken breasts into thin, even pieces. Season with Italian seasoning. Preheat oven to 350 degrees.
Heat skillet over medium heat and add oil. Once the oil is hot, not smoking, add chicken breasts and cook for 5-6 minutes on each side or until cooked through. Slice into 1" chunks.
Mix the penne pasta, diced chicken, marinara sauce, 1/2 cup of parmesan cheese, 1 cup of mozzarella cheese together until combined in a large mixing bowl. Place mixture into a 9x13 casserole dish.
Add the remaining parmesan and mozzarella cheese on top of the mixture and bake for 30 minutes or until the cheese is melted.
Garnish with lightly crushed croutons and serve.