01 -
Combine diced chicken, olive oil, and all listed spices in a large bowl. Massage to coat evenly and marinate for at least 30 minutes.
02 -
In a large skillet, heat a drizzle of olive oil with 1 tablespoon butter over medium-high heat. Sauté marinated chicken for 6 minutes, turning to brown all sides. Transfer chicken to a plate.
03 -
Using the same skillet, add broccoli and cook for 2 minutes until vibrant and just tender. Remove broccoli and set aside.
04 -
Lower heat to medium. Add remaining butter to the pan and melt. Sauté minced garlic until fragrant, about 1 minute. Stir in heavy cream and cream cheese, whisking until smooth and thickened. Add grated Parmesan, salt, and black pepper. Mix well, then simmer 3 minutes.
05 -
In a large pot of salted water, boil pasta shells according to box instructions until al dente. Reserve 1/2 cup pasta water before draining.
06 -
Mix cooked chicken, broccoli, 1/2 cup mozzarella, 1/4 cup shredded Parmesan, and several tablespoons of cheese sauce together in a bowl to make the stuffing.
07 -
Fill each shell generously with the chicken and broccoli filling using a spoon.
08 -
Spread a layer of cheese sauce in a baking dish. Arrange stuffed shells over the sauce. Spoon additional sauce and remaining cheeses on top. Sprinkle with Italian herbs.
09 -
Bake at 375°F (190°C) for 15 minutes or until cheese is melted and golden.