This baked Chicken Broccoli Alfredo Pasta is a hearty upgrade on your favorite fettuccini Alfredo recipe. Made with shredded chicken, crispy bacon, broccoli, penne pasta, homemade Alfredo sauce and tons of cheese, this cheesy chicken Alfredo casserole is an ultimate comfort food favorite!

Chicken Broccoli Alfredo Pasta

Name: Chicken Broccoli Alfredo Pasta Casserole
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Ingredients: 12 ounces Penne pasta; 2 cups cooked shredded chicken; 4 tablespoons butter; 4 tablespoons all purpose flour; 3 1/2 cups whole milk; 1 1/2 cups heavy cream; 4 cloves garlic, minced; 1 teaspoon salt; 2 teaspoon onion powder; 1/2 teaspoon black pepper; 10 ounces Parmesan cheese; 2 - 3 ounces pre-cooked bacon pieces (*about 6 pieces of bacon, chopped); 16 ounces mozzarella cheese, shredded; 2 cups broccoli, frozen

When it comes to cheesy comfort food like this Chicken Broccoli Alfredo Pasta, I am all in! There is nothing I love more than cheesy baked casseroles, chicken parmesan topped with all that mozzarella cheese and don’t forget loaded potato skins! Yum!

But my all-time favorite has to be this chicken Alfredo casserole. Shredded chicken, homemade Alfredo sauce, crispy bacon pieces and crunchy broccoli all tossed together with penne pasta is an ooey gooey cheesy comfort food dream.

Baked Chicken Alfredo Pasta

So other than copious amounts of cheese, why does this cheesy chicken casserole work?

Personalized – I love how versatile this chicken casserole is. Not a huge veggie lover? Leave them out! Want to change out the cheeses? Go for it! .. cheddar would taste amazing in this recipe. Don’t have any chicken thawed out but you have ground beef? Go for it!!
Flavor – This is one family favorite dish that everyone loves because it is hearty and comforting every time. Homemade Alfredo sauce is easy to make and always has an amazing garlic flavor along with the salty tang of Parmesan cheese.
Convenience – In this baked Alfredo recipe, I use pre-made shredded chicken, frozen broccoli and store bought pre-cooked bacon pieces. Substituting in those items makes pulling this casserole recipe together in half the time.

How to Make Chicken Alfredo Casserole

Cook Pasta – Set to boil a large pot of salted water and cook your pasta to al dente following the cooking instructions on the back of your pasta box. Add frozen broccoli to boiling pasta water 1 minute before pasta is finished cooking. Drain and set aside.

Make the Alfredo sauce – Preheat oven to 350 degrees F. While your pasta is cooking, grab a large pan and melt butter over medium high heat. Add in flour and garlic, whisk to combine with the butter before stirring in the milk, heavy cream and seasonings. Reduce heat to Low and simmer to thicken your sauce. Add in Parmesan and stir until melted.

Assembly – Add bacon pieces and shredded chicken into your Alfredo sauce and pour over pasta and broccoli. Stir to combine. Pour your chicken pasta into a 9×13 pan and cover with shredded mozzarella cheese. Bake for uncovered for 25 minutes.

Serve – Remove from oven and let sit 5 minutes before serving. Garnish with fresh parsley and serve with some yummy garlic bread.

Recipe Tips

Chicken – If you prefer to cook your chicken yourself instead of grabbing a rotisserie chicken or pre-cooked shredded chicken, bake 2 chicken breasts in a 350 degree oven for 25 minutes and shred or cube for this recipe.
Broccoli – I used 2 cups of frozen broccoli for this recipe but you can grab a head of broccoli, cut florets off and either roast or blanch your fresh broccoli for this recipe.
Bacon – I am a huge fan of pre-cooked bacon pieces.. you know the ones sold in a small bag usually found in the salad dressing aisle of your grocery store? If those are not your thing, no worries, simply cook 5-6 pieces of bacon until crispy. Chop and add to this recipe instead of the pre-cooked version.
Cheese – I know it’s a pain but shredding the mozzarella cheese fresh from a block will reward you will the meltiest, ooey gooey cheese on top of this glorious casserole. Shredded cheeses in a bag are a great time saver but the cheese oftentimes doesn’t melt very well.

Storage and Reheating

Storage – Store any leftover Chicken Broccoli Alfredo Pasta in an airtight container in the refrigerator for up to 3 days.
Reheating – Butter sauces will break when cooling so when you reheat your leftovers, the sauce will appear to be very buttery. It will still be delicious so reheat in the microwave for 1-2 minutes, stirring half way through.

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Enjoy! 🖤 Heather