In a large pot of salted boiling water, cook the fettuccine according to package instructions until al dente. Drain and set aside.
If using fresh broccoli, steam the florets for about 3-4 minutes until bright green and slightly tender. If using frozen, simply thaw them and set aside.
In a large mixing bowl, combine the cooked pasta, shredded chicken, steamed broccoli, Alfredo sauce, garlic powder, onion powder, salt, and pepper. Mix until well incorporated.
Grease a 9x13-inch casserole dish with olive oil. Pour the pasta mixture into the dish, spreading it evenly.
Sprinkle the shredded mozzarella and grated Parmesan cheese evenly over the top of the casserole.
In a small bowl, combine breadcrumbs with a drizzle of olive oil; mix until coated. Sprinkle the breadcrumb mixture evenly over the cheese layer for added crunch.
Cover the casserole with aluminum foil and bake in the preheated oven for 25 minutes. Then, remove the foil and bake for an additional 10-15 minutes or until the top is golden and bubbly.
Remove from the oven and let it cool for a few minutes. Garnish with chopped parsley before serving.
Notes
Feel free to use leftover chicken for a quicker preparation.
Keyword Alfredo, broccoli, casserole, chicken, pasta