Instant Pot Skinny Fettuccine Alfredo
This Instant Pot Skinny Fettuccine Alfredo is a lighter take on a classic comfort-dish favorite. It delivers velvety sauce, tender noodles, and plenty of bright garlic flavor without heavy cream or unnecessary extras. The trick is using simple pantry ingredients, a bit of cornstarch to thicken, and freshly grated parmesan for that savory, nutty finish. The whole meal comes together fast, which makes it ideal for busy weeknights or when you want a satisfying bowl without a lot of fuss.
Why you’ll love this version
Because it skips heavy cream and uses skim or 1% milk paired with low-sodium broth, this recipe yields the same rich mouthfeel with fewer calories. The Instant Pot cooks the pasta evenly while letting the flavors meld. Freshly grated parmesan folds into the warm sauce to create a silky texture that clings to every strand of fettuccine. Plus, the ingredient list is short, affordable, and pantry-friendly.
Ingredients
- 8 ounces fettuccine noodles, broken in half
- 1 teaspoon oil
- 3 cloves garlic, minced
- salt and pepper, to taste
- 2 1/2 cups low-sodium chicken broth (or vegetable broth)
- 1 cup milk, skim or 1%
- 3 teaspoons cornstarch
- 1/2 teaspoon onion powder
- 1/2 teaspoon dried basil
- 1/2 teaspoon dried parsley flakes
- 1 cup freshly grated parmesan cheese
Equipment
- 6-quart (or larger) Instant Pot or electric pressure cooker
- Wooden spoon or heatproof spatula
- Measuring cups and spoons
- Small bowl for the cornstarch slurry
- Fine grater for the parmesan (recommended)
Taste and texture notes
Fettuccine cooks to tender perfection in the sealed environment of the Instant Pot, and breaking the noodles in half helps them submerge and cook evenly. The cornstarch slurry thickens the sauce without the heaviness of cream. Use freshly grated parmesan for the best melt; pre-grated cheese contains additives that can prevent proper melting. Finish with a grind of black pepper and a sprinkle of parsley for color and freshness.
Step-by-step directions
- Prepare the Instant Pot: Press the Sauté function on your Instant Pot and add 1 teaspoon oil. Allow it to heat for 30 seconds so it’s shimmering but not smoking.
- Sauté the garlic: Add 3 cloves garlic, minced, to the hot oil. Stir frequently and cook for about 30 to 45 seconds until fragrant. Watch carefully so the garlic does not brown; you want it softened and aromatic.
- Add the broth and noodles: Pour in 2 1/2 cups low-sodium chicken broth (or vegetable broth) and deglaze the bottom of the pot by stirring, scraping up any browned garlic. Add 8 ounces fettuccine noodles, broken in half, and push them down so they’re mostly submerged in the liquid. Don’t stir excessively; spreading the noodles evenly helps prevent sticking.
- Season: Sprinkle in a pinch of salt and a few grinds of black pepper. Add 1/2 teaspoon onion powder, 1/2 teaspoon dried basil, and 1/2 teaspoon dried parsley flakes. These dried seasonings will infuse the cooking liquid and season the pasta as it cooks.
- Pressure cook: Cancel the Sauté function, then secure the lid and set the valve to Sealing. Cook on High Pressure for 5 minutes. The Instant Pot will take a few minutes to come to pressure before the cook time begins.
- Quick release: When the 5-minute cook time is up, perform a quick release by carefully turning the valve to Venting to release the steam. Once the pressure has fully released and the pin drops, open the lid.
- Mix milk and cornstarch: While the noodles are cooking or immediately after opening the lid, whisk together 1 cup milk (skim or 1%) and 3 teaspoons cornstarch in a small bowl until smooth. This makes a slurry that will thicken the sauce without lumps.
- Add milk slurry and heat: With the lid off, stir the milk-and-cornstarch mixture into the hot pasta and broth in the pot. Press the Sauté function on low or Normal and simmer, stirring constantly, until the sauce begins to thicken, about 2 to 4 minutes. Keep the heat moderate so the milk doesn’t scorch and stir to prevent sticking.
- Finish with parmesan: Once the sauce has thickened, turn off the Instant Pot. Add 1 cup freshly grated parmesan cheese and stir until the cheese melts and the sauce becomes smooth and glossy. Taste and adjust with more salt and pepper if needed; freshly grated parmesan may be salty, so season carefully.
- Serve immediately: Spoon the Instant Pot Skinny Fettuccine Alfredo into bowls while hot. Optionally garnish with an extra sprinkle of parmesan and a pinch of dried parsley or a few fresh herbs if desired. Serve right away for the best texture; the sauce will continue to thicken as it cools.
Tips for success
- Break the fettuccine noodles in half so they fit and cook evenly in the Instant Pot. Whole long noodles can tangle and cook unevenly.
- Use freshly grated parmesan rather than pre-shredded—fresh cheese melts into the sauce for a creamier result.
- If you prefer a slightly thicker sauce, dissolve an extra 1 teaspoon cornstarch in 2 teaspoons cold milk and add it while finishing on Sauté, stirring until the sauce reaches your desired consistency.
- Low-sodium broth lets you control the salt level. If you use regular broth, taste before adding extra salt.
- To make this dish vegetarian, choose a vegetable broth option in place of chicken broth.
- If the sauce becomes too thick after standing, stir in a splash of milk or warm broth to loosen it.
Variations and add-ins
This Instant Pot Skinny Fettuccine Alfredo is a versatile base—here are some easy ways to customize it without losing the simple, light character:
- Vegetable boost: Stir in roasted or steamed broccoli florets, sautéed mushrooms, or wilted spinach just before serving.
- Protein: Add shredded rotisserie chicken, cooked shrimp, or crumbled cooked turkey sausage for a heartier meal. Fold in warm protein right after adding the parmesan so it warms through.
- Bright finish: A squeeze of lemon juice (about 1 teaspoon) stirred into the finished sauce brightens the flavors and cuts richness.
- Herb variation: Swap dried basil and parsley with Italian seasoning, or finish with torn fresh basil for a fragrant touch.
Storage and reheating
Store leftovers in an airtight container in the refrigerator for up to 3 days. The sauce will thicken as it cools; reheat gently on the stovetop over low heat while stirring, and add a splash of milk or broth to loosen the sauce to your preferred consistency. You can also rewarm single portions in the microwave in 30- to 45-second bursts, stirring between intervals and adding a little liquid if needed.
Serving suggestions
Pair this lighter fettuccine alfredo with a crisp side salad and a slice of crusty bread for dipping. A simple arugula salad with lemon vinaigrette or a chopped garden salad balances the richness of the pasta. For a cozy weeknight, serve with roasted vegetables or a tray of oven-roasted cherry tomatoes tossed with olive oil and salt.
Final notes
This recipe proves you don’t need heavy cream to achieve a luscious Alfredo-style sauce. The Instant Pot cooks the pasta quickly and evenly, while the milk-cornstarch combination creates a satisfying, clingy sauce. With a short ingredient list and straightforward steps, this Instant Pot Skinny Fettuccine Alfredo is an easy, crowd-pleasing option when you crave creamy pasta without the extra richness.
Enjoy a warm bowl and don’t be shy about customizing with your favorite vegetables or proteins. The balance of comfort and simplicity here makes this a recipe you’ll return to again and again.
Instant Pot Skinny Fettuccine Alfredo
Ingredients
Equipment
Method
- Set the Instant Pot to Sauté and add 1 teaspoon oil. When hot, add the minced garlic and stir for about 10 seconds, then turn the Instant Pot off.
- Add the broken fettuccine and pour in 2 1/2 cups low-sodium chicken (or vegetable) broth, ensuring the noodles are submerged.
- Secure the lid and set the valve to Sealed. Cook on Manual (High Pressure) for 3 minutes.
- When the cook time ends, allow a natural pressure release for 6 minutes, then carefully turn the valve to Venting to release any remaining pressure and open the lid.
- Stir the pasta to separate any clumps and loosen the noodles from the bottom.
- In a small bowl whisk together 1 cup milk and 3 teaspoons cornstarch until smooth. Add the milk mixture to the pot along with 1/2 teaspoon onion powder, 1/2 teaspoon dried basil, 1/2 teaspoon dried parsley, and the grated Parmesan. Season with salt and pepper to taste.
- Turn the Instant Pot to Sauté and cook, stirring gently, until the sauce just begins to thicken. Turn the Instant Pot off.
- Let the pasta rest a few minutes—the sauce will thicken as it cools—then serve. Add extra Parmesan if a thicker sauce is desired.
Notes
- If you don't have an Instant Pot, you can make this on the stovetop in one pan.
- Use low-sodium broth to control saltiness.
- Stir the cornstarch into cold milk before adding to avoid lumps.
- The sauce thickens as it cools, so remove from heat when it just begins to thicken.
