01 -
Preheat the oven to 375°F. Grease a 9x13 inch baking dish and set it aside.
02 -
Bring a large pot of water to a boil. Add a generous pinch of salt and cook the pasta shells according to the package directions. Drain and rinse with cold water to prevent sticking.
03 -
In a medium bowl, combine the ricotta, 1 cup of mozzarella, 1 cup of parmesan, eggs, cooked chicken, and a pinch of salt and pepper.
04 -
In a large skillet over medium heat, melt the butter. Whisk in the flour and cook until the mixture is golden brown. Gradually whisk in the milk, followed by the heavy cream, 1 cup of parmesan, garlic, and parsley. Cook, stirring constantly, until the sauce thickens.
05 -
Spread 1 cup of the sauce in the bottom of the prepared baking dish. Stuff each shell with the chicken and cheese mixture and arrange them in the dish.
06 -
Pour the remaining sauce over the stuffed shells and sprinkle with the remaining mozzarella and parmesan cheese.
07 -
Bake for 25-30 minutes, until the sauce bubbles and the cheese is golden brown. Garnish with extra parsley, if desired, and serve warm.