Dinner Instant Pot Casserole Chicken One-Pot Comfort Food

Instant Pot Chicken Alfredo Casserole — Creamy Pasta Bake Made Fast

Name: Instant Pot Chicken Alfredo Casserole — Creamy Pasta Bake Made Fast
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Yield: 6 servings
Cuisine: American
Ingredients: 1 lb Boneless skinless chicken breasts; 1 tbsp Olive oil; 1 batch (1 onion + 3 cloves) Aromatics (1 medium onion, diced + 3 garlic cloves, minced); 1 tsp salt + 1/2 tsp pepper Salt and black pepper; 2 cup Low-sodium chicken broth; 12 oz Uncooked penne pasta; 1 cup Heavy cream; 4 oz Cream cheese (softened); 1.5 cup Shredded mozzarella; 1 cup Frozen peas

A speedy, comforting casserole that turns creamy chicken Alfredo into a hands-off Instant Pot pasta bake. Tender chicken, al dente penne and a silky cream-cheese Alfredo finish under a melty cheese topping for a weeknight crowd-pleaser.

0.0(0 reviews)

Prep: 15m · Cook: 20m · Total35 mins

DifficultyEasy

Serves6

AuthorJake

Instant Pot Chicken Alfredo Casserole — Creamy Pasta Bake Made Fast

I created this Instant Pot Chicken Alfredo Casserole to capture the silky richness of a homemade Alfredo while keeping dinner practically hands-off. A quick sear on the chicken builds real savory depth, and dollops of cream cheese plus heavy cream melt into the broth to form a clingy, velvety sauce that coats al dente penne. Frozen peas add a tender pop of sweetness and color, while shredded mozzarella — or a minute beneath a hot broiler — delivers the melty, browned top that makes a casserole feel like comfort food.

What makes this version work in under 35 minutes is technique: deglaze the pot well to avoid bitter scorch, layer the pasta on top of the liquid to prevent sticking, and shred the chicken back into the sauce so the meat soaks up creaminess without drying out. It’s designed for busy weeknights, picky eaters, and anyone who wants a one-pot dish that’s both substantial and fuss-free; it’s easy to scale for leftovers or to finish under the broiler for a party-ready crust. Read the tips below for small timing and texture adjustments that really improve the finished dish.

Plan your timing

Enter your target meal time:

6:20 pm–6:27 pm→Sauté aromatics and brown the chicken

6:27 pm–6:34 pm→Add liquids, cream and pasta

6:34 pm–6:41 pm→Pressure-cook the pasta and chicken

6:41 pm–6:48 pm→Shred chicken and finish the sauce

6:48 pm–6:55 pm→Optional broil and serve

Ingredients

Yield

Instructions

Sauté aromatics and brown the chicken

Set the Instant Pot to Sauté and heat the olive oil until shimmering. Season the chicken breasts with salt and pepper, then brown 2–3 minutes per side until golden; transfer to a plate. Add the diced onion and minced garlic to the pot and cook 1–2 minutes until softened and fragrant, scraping up browned bits.

For this step

1 lbBoneless skinless chicken breasts
1 tbspOlive oil
1 batch (1 onion + 3 cloves)Aromatics (1 medium onion, diced + 3 garlic cloves, minced)
1 tsp salt + 1/2 tsp pepperSalt and black pepper

Add liquids, cream and pasta

Pour in the chicken broth and heavy cream and scrape any stuck bits from the bottom with a wooden spoon to deglaze the pot. Spread the uncooked penne in an even layer over the liquid (do not stir), then dollop the cream cheese around the pasta so it melts into the sauce while cooking.

For this step

2 cupLow-sodium chicken broth
12 ozUncooked penne pasta
1 cupHeavy cream
4 ozCream cheese (softened)

Pressure-cook the pasta and chicken

Return the browned chicken to the top of the pasta, close the lid, and set the valve to Sealing. Pressure cook on High for 5 minutes, then perform a Quick Release once the timer finishes. Carefully remove the lid.

Shred chicken and finish the sauce

Remove the chicken to a cutting board, shred with two forks, then return it to the pot. Stir in the shredded mozzarella and frozen peas; switch to Sauté for 2–3 minutes until the cheese is melted and the sauce has thickened to your liking.

For this step

1.5 cupShredded mozzarella
1 cupFrozen peas

Optional broil and serve

If you want a golden top, transfer the mixture to a shallow casserole dish, set under a hot broiler for 2–4 minutes until bubbly and lightly browned, then remove. Serve hot, adjusting salt and pepper to taste.

Tips from the kitchen

Brown the chicken first

Searing the breasts for just 2–3 minutes per side adds deep flavor and those fond bits that deglaze into the sauce—don’t skip this step.

Deglaze thoroughly

After browning, pour in the broth and scrape the bottom until there are no stuck bits; this prevents burn notices and gives the sauce a savory base.

Layer pasta, don’t stir

Spread the penne in an even layer on top of the liquids without stirring so the pasta cooks evenly and the starches don’t settle and trigger burning.

Use softened cream cheese

Bring the cream cheese to room temperature or cut into small pieces so it melts quickly and disperses into a smooth sauce during pressure cooking.

Quick release carefully

Perform a quick release as instructed to avoid overcooking the pasta; if you prefer a creamier, more tender result, allow 2 minutes of natural release instead.

Variations & substitutions

Chicken thighs instead

Substitute boneless skinless thighs for juicier, more forgiving meat; use the same cook time but reduce searing time to avoid over-browning.

Vegetarian Alfredo bake

Replace chicken with roasted mushrooms and artichoke hearts and use vegetable broth; add a tablespoon of lemon juice for brightness.

Gluten-free swap

Use a 12-ounce package of gluten-free penne and be mindful that some brands absorb more liquid—add 1/4 cup extra broth if the sauce seems dry after cooking.

Lighter dairy option

Use half-and-half mixed with a tablespoon of cornstarch and reduced-fat cream cheese to cut calories while maintaining creaminess; skip the broil for lower fat content.

Storage & make-ahead

Cool the casserole to room temperature and refrigerate in an airtight container for up to 3–4 days. Reheat gently on the stovetop over low heat with a splash of milk or broth to loosen the sauce, or microwave in 45–60 second bursts, stirring between intervals. You can freeze portions for up to 2 months—thaw overnight in the fridge and reheat slowly; texture softens slightly after freezing, so avoid broiling until reheated and served.

What to serve with it

Serve with a bright, acidic side to cut the richness—an arugula salad dressed with lemon vinaigrette or roasted broccoli with flaky salt works beautifully. A crisp white wine like unoaked Chardonnay or Pinot Grigio pairs well, or choose a light Italian lager for a casual meal. Garnish with chopped parsley or a few red pepper flakes for color and an extra flavor lift.

Frequently asked questions

Can I use chicken thighs instead of breasts?

Yes—boneless skinless thighs will give a richer, slightly more forgiving result; keep the same pressure-cook time but reduce sear time so they don’t overbrown.

What if I get a ‘burn’ notice on my Instant Pot?

Stop, deglaze thoroughly by scraping the bottom with broth until all browned bits are loosened, then rebuild the layers; ensure the pasta is spread on top of the liquid and not buried under dense aromatics to avoid starch sticking.

My pasta was a little mushy — how can I prevent that?

Use a short, sturdy shape like penne and follow the liquid ratio closely; if you consistently get mushy pasta, reduce the pressure time by 1 minute or use a firmer-brand pasta next time.

Can I assemble this ahead of time and cook later?

Yes—assemble through step 2, refrigerate covered for up to 24 hours, then return to room temperature for 15–20 minutes before pressure cooking; bring the vessel to pressure may take longer from cold.

Why do you instruct not to stir the pasta into the liquid?

Stirring can cause the starches to clump and settle on the bottom, which increases the risk of sticking and burn warnings; layering helps the pasta hydrate evenly from the liquid below.

Can I add more vegetables or mix-ins?

You can—add quick-cooking vegetables like spinach or peas at the end, or small-diced carrots and bell peppers that will become tender during pressure cook; avoid large, dense vegetables unless you pre-cook them so they finish at the same time as the pasta.

About the author

Jake

Hello, I'm Jake. I started this recipe site with the idea that I hated recipe websites that overwhelm you with long stories and ads just to see plain content that's not helpful. My goal is to provide you with quality recipes, simple ideas and a fun cooking experience. There's lots of fun things to cook, and I think as you browse the site you'll find that TopShelf.Recipes is the place for quality recipes on the web.

See all recipes by Jake →

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Ingredients

6 servings

Step 1: Sauté aromatics and brown the chicken

Boneless skinless chicken breasts1 lb
Olive oil1 tbsp
Aromatics (1 medium onion, diced + 3 garlic cloves, minced)1 batch (1 onion + 3 cloves)
Salt and black pepper1 tsp salt + 1/2 tsp pepper

Step 2: Add liquids, cream and pasta

Low-sodium chicken broth2 cup
Uncooked penne pasta12 oz
Heavy cream1 cup
Cream cheese (softened)4 oz

Step 4: Shred chicken and finish the sauce

Shredded mozzarella1.5 cup
Frozen peas1 cup

Nutrition Facts

Per serving: about 2 cups

Calories610

Total Fat32.7g

Saturated Fat15.8g

Trans Fat0.8g

Polyunsaturated Fat8.9g

Monounsaturated Fat4.9g

Total Carbohydrates50.6g

Dietary Fiber5.3g

Total Sugars6.2g

Protein30.3g

Nutrition values are estimated from USDA ingredient data and may vary based on preparation, brands, and portion sizes. Values are provided for informational purposes only.

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