Ingredients
Equipment
Method
Prepare the casserole
- Preheat the oven to 375°F.
Cook the chicken
- Heat the olive oil in a 12-inch skillet over medium-high heat, then add the chicken, salt, and pepper.
- Cook for 5–7 minutes, stirring occasionally, until the chicken reaches 165°F.
- Transfer the chicken to a plate.
Cook the pasta
- Cook the pasta shells according to the package directions until just shy of al dente.
- Drain the shells and rinse briefly with cool water.
Make the filling
- Stir together the ricotta, egg, 3/4 cup mozzarella, 1/3 cup Parmesan, parsley, Italian seasoning, and garlic in a large bowl.
- Fold in the cooked chicken.
Assemble and bake
- Coat a 9x13-inch baking dish with nonstick cooking spray.
- Spread 1 cup marinara sauce over the bottom of the dish.
- Fill 24 intact shells evenly with the filling and arrange them in the dish.
- Pour the remaining sauce over the shells.
- Top with the remaining 3/4 cup mozzarella and 1/3 cup Parmesan.
- Cover the dish with foil and bake for 20 minutes.
- Uncover and bake for 10–15 minutes, until the sauce is bubbling and the cheese is melted.
- Let the casserole rest for 10 minutes before serving.
Notes
For neatly filled shells, spoon the filling into each shell evenly. Refrigerate leftovers for 3–4 days; freeze for up to 3 months. For a lighter variation, use part-skim ricotta and mozzarella.
