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Dinner · Part 2 of 3: Instructions

Creamy Chicken Spinach Alfredo Spaghetti Step-by-step instructions

A warm bowl of creamy chicken spinach alfredo spaghetti with steam rising from the glossy sauce.
Prep
Cook
Total
Serves
4

Before you start

Before turning on the stove, organize all your ingredients to ensure a smooth cooking process. Pat the chicken breasts dry with paper towels to ensure a proper sear, then cut them into bite-sized pieces.

Mince the fresh garlic cloves and measure out the heavy cream. Wash the baby spinach thoroughly and spin it dry. Bring a large pot of water to a rolling boil so you can cook the spaghetti concurrently with the sauce.

Ingredients at a glance (5)
  • 12 oz spaghetti
  • 1 lb chicken breast, cut into bite-sized pieces
  • 3 garlic cloves, minced
  • 1 1/2 cups heavy cream
  • 2 cups baby spinach

Instructions

Prep and Searing the Chicken

  1. Boil the Spaghetti
    Bring a large pot of water to a boil. Add the spaghetti and cook according to the package instructions until al dente. Drain the pasta, reserving half a cup of the pasta cooking water, and set aside.
    Look for The pasta should be tender but still have a slight bite.
    Tip Do not rinse the pasta after draining; the starch helps the sauce stick.
  2. Sear the Seasoned Chicken
    Heat a large skillet over medium-high heat. Add the chicken pieces to the hot skillet and sear until golden brown and cooked through, about 6 to 8 minutes. Ensure the chicken reaches an internal temperature of 165°F (74°C). Remove the chicken from the skillet and set aside.
    Look for The chicken should have a golden-brown crust on all sides.
    Safe temperature 165°F (74°C) internal temperature (poultry)
    Tip Avoid crowding the pan so the chicken sears instead of steaming.

At the end of this phase, the chicken pieces should be beautifully browned and caramelized on the outside, releasing a savory, roasted aroma.

When sliced, the meat must be completely opaque and reach a safe internal temperature of 165 degrees Fahrenheit (74 degrees Celsius). The bottom of the skillet will have a layer of golden-brown drippings, which are essential for flavoring the sauce in the next steps.

Building the Alfredo Sauce

  1. Sauté the Garlic
    In the same skillet, reduce the heat to medium. Add the minced garlic and cook for about 1 minute, stirring constantly, until fragrant and soft, being careful not to let it burn.
    Look for The garlic should be soft and highly aromatic without browning.
    Tip Use a wooden spoon to scrape up any browned chicken bits from the bottom of the pan.
  2. Simmer the Cream
    Pour the heavy cream into the skillet and bring to a gentle simmer. Reduce the heat to low and whisk constantly until the sauce is smooth and begins to thicken slightly.
    Look for The sauce should be cohesive, smooth, and bubble gently.
    Tip Keep the heat low to prevent the dairy from separating or curdling.
  3. Wilt the Spinach
    Add the fresh baby spinach to the simmering cream sauce. Stir gently and let it simmer for 1 to 2 minutes until the spinach is fully wilted and incorporated into the velvety sauce.
    Look for The spinach should be bright green and significantly reduced in size.
    Tip Do not overcook the spinach or it will lose its vibrant color.

The sauce should be bubbling gently, filled with the rich aroma of sautéed garlic and warm cream. The cream should be completely integrated, creating a smooth, cohesive, and slightly thickened liquid. The spinach leaves will be fully wilted, turning a deep, vibrant green and shrinking significantly in volume as they absorb the cream.

Combining and Tossing

  1. Toss Pasta and Chicken
    Add the cooked spaghetti and seared chicken pieces back into the skillet with the alfredo sauce. Toss everything together over low heat until the pasta is thoroughly coated and steaming hot. If the sauce is too thick, add a splash of the reserved pasta water.
    Look for The sauce should cling beautifully to the spaghetti with no pooling liquid.
    Tip Serve immediately while the dish is hot and creamy.

The final dish should look incredibly glossy and unified, with the velvety alfredo sauce clinging perfectly to every strand of spaghetti. There should be no pooling liquid at the bottom of the pan. The seared chicken pieces and wilted spinach should be evenly distributed throughout the pasta, steam rising from the hot, comforting mixture as you prepare to serve.

Common mistakes

A common mistake is using high heat when adding the dairy, which can cause the heavy cream to break and separate. Keep the heat on low to medium-low during this stage.

Another error is overcooking the spinach until it turns brown and mushy; add it at the very end of the simmering process so it just wilts. Finally, do not rinse the cooked spaghetti, as the natural starches on the pasta are necessary to help the alfredo sauce adhere.

How to tell it’s done

The dish is fully cooked and ready when the chicken pieces have reached a safe internal temperature of 165 degrees Fahrenheit (74 degrees Celsius) and the spaghetti is al dente, meaning it still has a slight bite.

The alfredo sauce should coat the back of a spoon smoothly, indicating it has thickened to the correct velvety consistency. Ensure the entire mixture is steaming hot throughout before transferring it to warm serving bowls.

  • Poultry: 165°F (74°C) in the thickest part

Coming up in Part 3: common questions

  • Can half-and-half be used instead of heavy cream?
  • Why did the alfredo sauce turn out thin?
  • How can the sauce be thinned if it gets too thick?

Also in Part 3: variations (Cajun Chicken Alfredo, Mushroom Alfredo), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)