Can I make one pot chicken alfredo pasta with milk instead of heavy cream?

Yes. Use whole milk, whisk 2 teaspoons of cornstarch into the broth before adding it, and keep the simmer gentle. Half-and-half works with no changes.

Why did my alfredo sauce turn grainy?

Almost always pre-shredded parmesan, which is coated in anti-caking starch, or cheese added while the pot was boiling. Grate a block yourself and stir it in off the heat.

What pasta works best for one pot pasta?

Short, sturdy shapes such as penne, rigatoni, rotini, ziti or shells. They cook evenly in the sauce and stir easily.

Can I use rotisserie chicken?

Yes. Skip the searing step and stir 3 cups of shredded rotisserie chicken in with the parmesan at the end to heat through.

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One pot chicken alfredo pasta

By Ami · September 4, 2026 · ★★★★★ 4.9 from 64 reviews · Jump to Recipe · Print

This one pot chicken alfredo pasta is the dinner I make when I want something creamy and comforting but refuse to wash a colander, a saucepan and a skillet. Golden seared chicken, penne cooked straight in the garlicky parmesan cream, 30 minutes start to finish, about 42g of protein a bowl — it's already outpacing my cottage cheese alfredo as the most-requested pasta in this house.

One pot chicken alfredo pasta — creamy parmesan penne with golden seared chicken and parsley in a wide enamel pot, easy 30-minute dinner recipe

This creamy pasta dinner basically makes itself.

The pasta cooks in the sauce. Penne simmers in chicken broth and cream, so the starch it releases thickens the alfredo for you — no roux, no flour, no separate pot of boiling water. It's the same trick that makes one pot creamy chicken and rice so easy.
Real alfredo, not a jar. Butter, garlic, cream and a big handful of freshly grated parmesan. That's the sauce. It tastes like the restaurant version because it is the restaurant version, just built in one pot instead of three, like the sauce on the garlic parmesan chicken pasta.
It's a real high-protein dinner. A pound and a half of chicken breast across four bowls plus all that parmesan lands around 42g of protein each. See what that covers for you on the protein calculator.

Here's what you'll need.

Chicken breast is my pick because it dices cleanly and sears fast, but thighs work too. Buy a block of parmesan and grate it yourself — the pre-shredded kind is coated in starch and turns the sauce grainy, which is the single most common reason a homemade alfredo goes wrong.

Ingredients for one pot chicken alfredo pasta in small bowls — diced chicken breast, penne, heavy cream, grated parmesan, garlic, butter, chicken broth, Italian seasoning and parsley

Here's how it all comes together.

Step 1 — Sear the chicken

Pat the diced chicken dry, season it with salt, pepper and Italian seasoning, and sear it in butter over medium-high heat until golden on the outside — about 5 minutes. It doesn't need to be cooked through yet; it finishes in the sauce. Scoop it onto a plate.

Seasoned diced chicken breast searing golden in butter in a wide pot for one pot chicken alfredo pasta

Step 2 — Bloom the garlic

Drop the remaining butter into the same pot and cook the garlic for 30 to 45 seconds, stirring, just until it smells amazing. Don't let it brown — burnt garlic makes the whole sauce bitter.

Minced garlic sizzling in melted butter in a pot, the base of homemade alfredo sauce

Step 3 — Add the pasta, broth and cream

Pour in the chicken broth and cream, scrape up the browned bits from the chicken, then add the dry penne and the seared chicken back in. Stir so the pasta is submerged.

Dry penne pasta being poured into a pot of chicken broth, cream and seared chicken for one pot alfredo

Step 4 — Simmer until tender

Bring it to a boil, then reduce to a steady simmer, cover, and cook 12 to 14 minutes, stirring every 3 or 4 minutes so the pasta doesn't stick. The liquid will look like too much at first; by the end it's a creamy sauce clinging to the penne.

Penne simmering in creamy broth in a covered pot, one pot chicken alfredo pasta in progress

Step 5 — Stir in the parmesan

Take the pot off the heat and stir in the grated parmesan a handful at a time until the sauce is glossy and smooth. Off the heat is important — boiling parmesan is how alfredo splits.

Grated parmesan being stirred into creamy chicken penne, alfredo sauce turning glossy

Step 6 — Finish and serve

Taste for salt, add lots of cracked black pepper and a handful of chopped parsley, and let it sit 2 minutes — the sauce thickens noticeably as it rests. Serve straight from the pot.

Chopped parsley and black pepper sprinkled over finished one pot chicken alfredo pasta

Bowl of creamy one pot chicken alfredo pasta with parmesan shavings and parsley — easy 30-minute high protein dinner

Things I learned while testing this recipe.

Grate the parmesan yourself. Pre-shredded cheese is dusted with cellulose so it doesn't clump in the bag — and that same coating stops it melting smoothly. A block and a microplane fix every grainy alfredo I've ever made.
Stir more than you think. One pot pasta wants a stir every few minutes. The starch settles to the bottom and will catch if you walk away for the whole 14 minutes.
Pull the pasta a minute early. It keeps cooking in the hot sauce while the cheese goes in. Al dente at the stove means perfect at the table.
Too thick? Splash of broth. Too thin? Two more minutes uncovered. The sauce is very forgiving either way — same rule as the marry me chicken sauce.

Make it a meal prep dinner.

Dice and season the chicken the night before. It sears faster and tastes better after a few hours with the salt.
Grate a big batch of parmesan. It keeps a week in a jar in the fridge and makes this, chicken parmesan and baked ziti all faster.
Portion into containers while warm. It reheats better than most cream sauces because the pasta starch keeps everything emulsified — a splash of milk brings it right back.

Here's what I'd serve with this.

A crisp green salad with lemon is all it really needs, but air fryer chicken tenders on the side make it a kid-approved feast.
Roasted broccoli or the steamed broccoli from beef and broccoli for something green on the plate.
Serve it after garlic butter steak bites for a very good date-night-in.
Round it out with a lighter chicken burrito bowl for lunch the next day and you've balanced the week.
And for the morning after, today's other new recipe, cottage cheese protein pancakes, is the 15-minute breakfast that keeps the high-protein streak going.

Just in case you have leftovers.

Storing: refrigerate in an airtight container up to 4 days. The pasta will keep soaking up sauce as it sits, so expect it thicker the next day. I don't recommend freezing — cream sauces separate and the pasta goes soft.

Reheating: in a skillet or saucepan over medium-low with a splash of milk or broth, stirring until creamy again, about 4 minutes. Microwave works too: 90 seconds with a tablespoon of milk, stir, then 30 seconds more.

More easy dinner recipes...

Marry me chicken — creamy sun-dried tomato skillet dinner

Garlic parmesan chicken pasta — 30-minute weeknight favorite

Creamy Tuscan salmon — 25-minute restaurant-style dinner

One pot creamy chicken and rice — easy 40-minute dinner

One pot chicken alfredo pasta

★★★★★ 4.9 from 64 reviews — easy one pot chicken alfredo pasta with golden seared chicken and penne cooked right in a garlicky parmesan cream sauce. 30 minutes, one pot, 42g protein a serving.

Prep 10 min · Cook 20 min · Total 30 min · Serves 4 · Category: Dinner · Cuisine: Italian-American

Ingredients

1½ lb boneless skinless chicken breast, cut into ¾-inch pieces
1 tsp Italian seasoning · 1 tsp kosher salt · ½ tsp black pepper
3 tbsp butter, divided
5 garlic cloves, minced
3 cups low-sodium chicken broth
1½ cups heavy cream
12 oz (¾ lb) dry penne pasta
1½ cups (about 4 oz) freshly grated parmesan, plus more to serve
¼ tsp freshly grated nutmeg (optional)
¼ cup chopped fresh parsley · cracked black pepper, to serve

Instructions

Sear. Pat the chicken dry and toss with the Italian seasoning, salt and pepper. Melt 1 tbsp butter in a large heavy pot over medium-high heat. Add the chicken in a single layer and cook, turning once, until golden, about 5 minutes. Transfer to a plate.
Garlic. Reduce the heat to medium. Add the remaining 2 tbsp butter and the garlic; cook, stirring, 30–45 seconds until fragrant but not browned.
Pasta. Pour in the broth and cream, scraping up the browned bits. Add the penne and the chicken with its juices; stir so the pasta is submerged.
Simmer. Bring to a boil, then reduce to a simmer, cover and cook 12–14 minutes, stirring every 3–4 minutes, until the pasta is just tender and the liquid has reduced to a creamy sauce.
Parmesan. Remove from the heat. Stir in the parmesan a handful at a time, plus the nutmeg if using, until smooth and glossy.
Serve. Season to taste, rest 2 minutes to thicken, then top with parsley, cracked pepper and extra parmesan.

Notes: Chicken thighs work in place of breast (add 2 minutes to the sear). Rigatoni, rotini or ziti sub for penne with the same timing; thin pastas like spaghetti cook faster and need a bigger pot. Add 3 cups of baby spinach with the parmesan for greens, or ½ cup sun-dried tomatoes with the garlic for a Tuscan version. Lighter: swap half the cream for whole milk and add 1 tsp cornstarch to the broth.

Nutrition (per serving, estimated): 760 calories · 42g protein · 66g carbs · 34g fat · 3g fiber

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FAQ

Can I make one pot chicken alfredo pasta with milk instead of heavy cream?: Yes, with a small tweak. Use whole milk, whisk 2 teaspoons of cornstarch into the broth before adding it, and keep the simmer gentle. It's a little less rich but still creamy. Half-and-half works with no changes.
Why did my alfredo sauce turn grainy?: Almost always pre-shredded parmesan (it's coated in anti-caking starch) or cheese added while the pot was boiling. Grate a block yourself and stir it in off the heat and it stays silky.
What pasta works best for one pot pasta?: Short, sturdy shapes — penne, rigatoni, rotini, ziti, shells. They cook evenly in the sauce and stir easily. Long pasta can work but tends to clump in a wide pot.
Can I use rotisserie chicken?: Absolutely. Skip step 1, and stir 3 cups of shredded rotisserie chicken in with the parmesan at the end just to heat through. Total time drops to about 22 minutes.