
This chicken and broccoli alfredo casserole turns basic stuff from your kitchen into a fancy-looking dish that's my favorite when friends come over wanting something warm and filling. When you mix juicy chicken, perfectly cooked pasta, and fresh broccoli all wrapped in homemade alfredo sauce, you get a meal that never sticks around for long.
I came up with this bake when my sister's family showed up without warning during a heavy snowfall. Working with limited time and whatever I had in my cupboards, I accidentally created what's now demanded at all our family get-togethers.
Ingredients
- Boneless skinless chicken breasts: gives you good protein that soaks up all the tasty flavors around it
- Fresh broccoli florets: brings nice crunch, bright color and good nutrients grab ones with firm, vibrant green tops
- Farfalle or penne pasta: these shapes have little nooks that grab onto the creamy sauce
- Heavy cream: makes the alfredo sauce rich and smooth don't go for the low-fat kind here
- Freshly grated Parmesan cheese: creates that real alfredo taste the stuff in containers won't melt right
- Minced garlic: adds that wonderful smell and flavor throughout the dish always go for fresh over bottled
- Italian seasoning: gives you a mix of herbs in one shot so you don't need five different bottles
- Olive oil: needed for cooking and making sure nothing sticks try to use the good stuff
Step-by-Step Instructions
- Prepare the baking dish:
- Coat a 9×13 inch dish completely with olive oil, getting all the corners and sides too. This helps everything come out easily when you're serving and makes cleanup way faster.
- Cook the chicken:
- Chop chicken breasts into 1inch chunks and sprinkle them well with salt and pepper. Warm olive oil in a big skillet on medium heat until it shines, then drop in chicken pieces without packing them too close. Cook about 6-8 minutes, flipping now and then, until they're golden outside and hit 165°F inside.
- Add vegetables:
- Throw the chopped garlic and broccoli pieces into your pan with the cooked chicken. Cook for 3-4 minutes while stirring often so the garlic doesn't burn. Your broccoli should brighten up but stay a bit crunchy since it'll cook more in the oven.
- Prepare the pasta:
- Get a big pot of water bubbling hard, toss in a tablespoon of salt, then cook your pasta about 2 minutes less than what the box says. Save half a cup of the starchy water before draining. The pasta will soften more while baking, so keeping it firmer now stops it from getting mushy later.
- Create the alfredo sauce:
- In a pot, slowly warm the heavy cream on medium-low until tiny bubbles form but don't let it boil. Slowly stir in your fresh Parmesan cheese until it's all melted smooth. Mix in Italian seasoning and taste for salt and pepper. If it looks too thick, splash in some of that pasta water you saved.
- Combine components:
- In your oiled baking dish, carefully mix together your pasta, chicken-broccoli mix, and the creamy sauce until everything gets coated evenly. If things seem too dry, add a bit more of that saved pasta water.
- Bake to perfection:
- Put your dish on the middle shelf of your hot oven and bake it uncovered for 20-25 minutes. Watch for the top to turn slightly golden and the edges to start bubbling. Let it sit for 5 minutes after taking it out so the sauce can thicken up nicely.

What really makes this dish stand out is using freshly grated Parmesan cheese. My Italian grandma taught me never to use the stuff from a container when making alfredo sauce. You'll notice a huge difference in how it melts and tastes, turning an ordinary meal into something everyone remembers.
Make-Ahead Options
This alfredo bake really shines as a prep-ahead meal. You can put it all together up to 24 hours before you need to cook it, wrap it tight with plastic, and stick it in the fridge. When you're ready to bake, just take it out about 30 minutes early and cook it a bit longer, maybe 5-10 extra minutes. The flavors actually get better overnight, making this perfect for busy weeknights or when company's coming.

Clever Substitutions
Don't worry if you need to switch things up in this dish. You can use leftover turkey or store-bought rotisserie chicken to cut down on cooking time. Out of broccoli? Just toss in some asparagus, peas, or even spinach. Want something lighter? Try half and half instead of heavy cream and add a spoon of flour to keep it thick enough. The dish works great with gluten-free pasta too if anyone can't have wheat, and tastes just as good.
Serving Suggestions
Make this hearty casserole even better with the right sides. A basic green salad with tangy lemon dressing balances out the rich sauce. Some garlic bread or crusty Italian loaf works great for scooping up extra sauce. When you want to really wow dinner guests, add some roasted cherry tomatoes still on the vine and pour glasses of Pinot Grigio or Chardonnay that go so well with creamy dishes.
Common Questions
- → What type of chicken works best?
For this dish, boneless skinless chicken breasts are your top pick, though thighs can give you a more flavorful result.
- → Can I use frozen broccoli?
Absolutely, frozen broccoli does the job nicely. Just make sure you thaw it and get rid of extra moisture before adding it in.
- → Is there a substitute for Parmesan cheese?
Try Pecorino Romano or Asiago cheese if you don't have Parmesan - they'll give you that same tangy, rich taste.
- → Can I make this ahead of time?
You bet! Put everything together and pop it in the fridge uncooked. When you're ready to eat, just bake it a little longer than normal.
- → How can I add more vegetables?
Go ahead and toss in some mushrooms, bell peppers, or spinach if you want more veggie goodness and extra nutrients.