Creamy, comforting, and seriously crowd-pleasing — Million Dollar Chicken Alfredo Stuffed Shells are the kind of dinner that makes everyone slide into the kitchen as soon as you open the oven.
Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish or similar size.
Boil the jumbo pasta shells in salted water according to package instructions until al dente. Drain and spread on a sheet pan or baking sheet to prevent sticking.
In a mixing bowl, combine the shredded or diced cooked chicken, ricotta cheese, 1/4 cup of the Parmesan cheese, and salt and pepper. Mix until well combined and creamy. Taste and adjust seasoning.
Carefully stuff each jumbo shell with about 2 tablespoons of the chicken-ricotta mixture. Arrange the stuffed shells seam-side up in a single layer in the prepared baking dish.
Spread a thin layer (about 1/2 cup) of Alfredo sauce across the bottom of the baking dish before placing the shells to prevent sticking and ensure even saucing. Place the stuffed shells on top.
Pour the remaining Alfredo sauce evenly over the stuffed shells, making sure each shell gets sauced. Sprinkle the shredded mozzarella and the remaining Parmesan cheese over the top.
Cover the baking dish with aluminum foil and bake in the preheated oven for 25 minutes to heat through and meld flavors.
Remove the foil and bake for an additional 10–15 minutes, until the cheese is bubbly and golden and the sauce is hot and slightly thickened. Let rest 5 minutes before serving.
Garnish with chopped fresh parsley and extra grated Parmesan if desired.
Notes
Use warm sauce for better coating, and consider adding vegetables like spinach or mushrooms for extra flavor.