01 -
Preheat oven to 350°F. Spray a 9x13-inch baking dish with oil.
02 -
Cook shells according to package instructions. Drain and rinse with cold water. Set aside.
03 -
Reserve 1/2 cup of alfredo sauce for topping.
04 -
Combine remaining alfredo sauce, diced chicken, broccoli, 3/4 cup cheddar cheese, and Parmesan cheese in a bowl.
05 -
Divide the filling evenly among the cooked pasta shells and arrange them in the prepared baking dish.
06 -
Drizzle reserved alfredo sauce over the shells and sprinkle with the remaining cheddar cheese.
07 -
Bake for approximately 20 minutes, or until the filling is bubbly and the cheese is melted.