Creamy Mushroom Chicken Spaghettini

My apartment smelled like buttery mushrooms and garlic before I even got my coat off. My roommate had decided to attempt a cream sauce from scratch, something we'd both been intimidated by for months. The kitchen was a disaster—flour dusted the counters, wine glasses sat half-empty near the stove, and Tiny Dancer was playing from a phone propped against the coffee maker. That night, over plates of steaming pasta, we realized that rich, comforting food doesn't have to be heavy or complicated to be special.

I made this for my sister last winter when she was recovering from surgery and needed something that felt like a hug. She took one bite, closed her eyes, and said this was exactly the kind of food that makes you believe everything will be okay. We ate at the coffee table while watching bad romantic comedies, and I've never seen pasta disappear so fast.

Ingredients

• Whole wheat spaghettini: The nutty flavor of whole wheat stands up beautifully to the earthy mushrooms, but regular spaghettini works perfectly if that's what you prefer
• Boneless chicken breasts: Pounding them to even thickness ensures they cook through without drying out—this single step changed my chicken game forever
• Cremini mushrooms: They have more flavor than white button mushrooms, though either will work here
• Yellow onion: Finely diced so it melts into the sauce, providing sweetness without any texture
• Fresh thyme: The woody, earthy flavor pairs perfectly with mushrooms, but dried thyme works in a pinch
• All-purpose flour: Creates the roux that thickens the sauce without making it heavy
• Low-sodium chicken broth: Using low-sodium broth lets you control the seasoning and prevents the dish from becoming too salty
• Low-fat milk: The secret to keeping this light—no cream needed for that silky texture
• Grated Parmesan: Adds umami depth that makes the sauce taste much richer than it actually is
• Dijon mustard: Just a teaspoon enhances all the other flavors without making the sauce taste like mustard

Instructions

Get your pasta water going:

Bring a large pot of salted water to a boil and cook the spaghettini until al dente, then reserve that pasta water before draining—the starchy liquid is liquid gold for adjusting sauce consistency later

Prep the chicken:

Pound those chicken breasts to an even thickness and season generously with salt and pepper

Sear the chicken:

Heat olive oil in a large nonstick skillet over medium-high heat and cook the chicken for 5 to 6 minutes per side until golden and cooked through, then remove to a plate and let it rest

Build the flavor base:

In the same skillet, sauté the mushrooms and onion for 4 to 5 minutes until golden and softened, then add the garlic and thyme and cook for just one minute more

Make the roux:

Sprinkle the flour over the vegetables and stir constantly for one minute to cook out the raw flour taste

Create the sauce:

Gradually whisk in the chicken broth followed by the milk, bringing everything to a gentle simmer and cooking for 2 to 3 minutes until slightly thickened

Add the finishing touches:

Stir in the Parmesan cheese and Dijon mustard until smooth, then season with salt and pepper and add spinach now if you are using it

Bring it all together:

Slice the rested chicken into strips, then add both the chicken and cooked pasta to the sauce, tossing gently and adding a splash of that reserved pasta water if needed

Serve it up:

Plate everything immediately, sprinkled with fresh parsley and extra Parmesan because everything is better with more cheese

Pin It

This became my go-to dinner for nights when friends need feeding but I don't want to spend hours at the stove. Something about the combination of tender chicken, earthy mushrooms, and that creamy sauce just makes people relax and open up.

Making It Your Own

Swap the chicken for turkey breast or leave it out entirely for a vegetarian version—just add extra mushrooms or toss in a can of white beans for protein. I've used gluten-free pasta and a 1-to-1 gluten-free flour blend with great success, and no one could tell the difference.

Wine Pairing Notes

A crisp Pinot Grigio cuts through the richness of the sauce while complementing the mushrooms, though a Sauvignon Blanc works beautifully too. Pour yourself a glass while you cook—the sauce tastes better that way anyway.

Serving Ideas

Keep it simple with a green salad dressed with lemon vinaigrette, or add some roasted asparagus if you want something more substantial. This pasta is filling enough to stand on its own for a weeknight dinner.

• Let the pasta finish cooking in the sauce for a minute so it really absorbs those flavors
• If the sauce gets too thick, add more pasta water rather than more milk
• The sauce continues to thicken as it stands, so serve immediately for the best texture

Pin It

Some of the best meals are the ones that come together on a Tuesday night when you are tired and just need something warm and comforting. This pasta has never let me down.

Recipe Questions & Answers

→ Can I make this dish vegetarian?

Yes, simply omit the chicken and add extra mushrooms or a can of white beans for protein. The vegetable flavors will shine through the creamy sauce beautifully.

→ What type of mushrooms work best?

Cremini or white mushrooms are ideal for their earthy flavor and tender texture. You can also use shiitake or portobello for a deeper, more intense mushroom flavor.

→ How do I prevent the sauce from becoming too thick?

Reserve some pasta water before draining. Add it back a splash at a time while tossing to achieve the perfect silky consistency that coats every strand of pasta.

→ Can I use regular pasta instead of whole wheat?

Absolutely. Regular spaghettini works perfectly fine—the sauce pairs beautifully with any pasta variety. Just adjust cooking time according to package instructions.

→ How long does this keep as leftovers?

Store in an airtight container in the refrigerator for up to 3 days. Reheat gently with a splash of milk or broth to restore the creamy texture.

→ What wine pairs well with this dish?

A crisp Pinot Grigio or Sauvignon Blanc complements the creamy sauce and earthy mushrooms beautifully. The acidity cuts through the richness while refreshing the palate.