01 - Bring a large pot of salted water to a boil. Add tortellini and cook according to package directions. Add broccoli florets during the last 2 minutes of cooking time. Drain and set aside.
02 - Pat chicken pieces dry and season thoroughly with salt and black pepper.
03 - Heat olive oil in a large skillet over medium-high heat. Add chicken and cook until golden and juices run clear, about 5–6 minutes. Transfer to a plate and keep warm.
04 - In the same skillet, add butter. Once melted, add minced garlic and sauté for 1 minute until fragrant.
05 - Reduce heat to medium. Pour in heavy cream, stirring to deglaze the skillet. Bring to a gentle simmer, then add Parmesan cheese. Mix until smooth and sauce thickens, about 2–3 minutes.
06 - Add the drained tortellini, broccoli, and cooked chicken to the skillet. Toss gently to coat ingredients evenly in the creamy sauce. Stir in crushed red pepper flakes if using.
07 - Taste and adjust seasoning with additional salt and black pepper if desired.
08 - Serve the dish hot, garnished with extra Parmesan cheese and chopped fresh parsley if desired.