01 -
Preheat oven to 375°F (190°C).
02 -
In a skillet over medium heat, melt 1 tablespoon butter. Add 1 tablespoon minced garlic and sauté until fragrant, about 1 minute. Stir in cooked chicken, Italian seasoning, salt, and pepper, combining thoroughly. Remove from heat and allow to cool slightly.
03 -
In a mixing bowl, blend ricotta cheese, 1 cup shredded mozzarella, 1 cup grated Parmesan, and the seasoned chicken mixture until evenly incorporated.
04 -
In a saucepan over medium heat, melt 4 tablespoons butter. Add 3 minced garlic cloves and cook for 1-2 minutes until aromatic. Stir in heavy cream, salt, and pepper. Simmer for 5 minutes, then gradually whisk in 1 cup grated Parmesan, stirring until the sauce is smooth and creamy.
05 -
Spread 1 cup of Alfredo sauce evenly over the bottom of a 9×13-inch baking dish. Stuff each cooked jumbo pasta shell with the chicken and cheese filling and arrange them in the prepared dish.
06 -
Pour remaining Alfredo sauce over the stuffed shells and sprinkle with additional shredded mozzarella cheese. Bake uncovered for 25 minutes, or until the cheese is fully melted and bubbling.
07 -
Remove baking dish from oven. Garnish with freshly chopped parsley if desired, and serve immediately while hot.