One-Pot Creamy Garlic Parmesan Chicken Pasta (Easy Weeknight Dinner)

A rich, comforting pasta made in one pan: juicy seared chicken, garlic, spinach, and a silky Parmesan sauce that clings to every strand. Perfect for busy weeknights and picky eaters.

Why this recipe works

• One pot for fewer dishes and faster cleanup.
• Short cook time — ready in about 30 minutes.
• Hands-off sauce: pasta cooks right in the sauce, absorbing flavor as it simmers.

Ingredients

Serves 4

• 2 boneless, skinless chicken breasts (about 1 lb / 450 g), thinly sliced into 1/2-inch strips
• 2 tbsp olive oil (30 ml)
• 1 small yellow onion, finely chopped (about 3/4 cup / 120 g)
• 4 garlic cloves, minced
• 1 tsp dried Italian seasoning (or 1 tbsp chopped fresh herbs)
• 1/2 tsp red pepper flakes (optional)
• 8 oz pasta (225 g) — fettuccine, linguine, or penne work well
• 3 cups low-sodium chicken broth (720 ml)
• 1 cup milk (240 ml) — whole or 2%
• 1 cup grated Parmesan cheese (100 g), plus extra for serving
• 2 cups fresh baby spinach (60 g)
• 2 tbsp unsalted butter (30 g)
• Salt and freshly cracked black pepper, to taste
• Lemon wedges, for serving (optional)
• Chopped parsley, for garnish (optional)

Equipment

• Large deep skillet or wide saucepan with lid (12-inch / 30 cm ideal)
• Wooden spoon or silicone spatula
• Tongs

Prep (5 minutes)

1. Slice the chicken into strips and season lightly with salt and pepper.
2. Grate the Parmesan, chop the onion, mince the garlic, and measure liquids.

Cook — Step by step (20–25 minutes)

1. Brown the chicken

1. Heat 1 tbsp olive oil in the skillet over medium-high heat until shimmering.
2. Add the chicken in a single layer, don’t overcrowd — cook 2–3 minutes per side until golden but not fully cooked through. Remove chicken to a plate and set aside.

2. Softened aromatics

1. Add the remaining 1 tbsp olive oil to the pan. Reduce heat to medium.
2. Add the chopped onion and a pinch of salt; cook 3–4 minutes until translucent.
3. Stir in the minced garlic, Italian seasoning, and red pepper flakes; cook 30–45 seconds until fragrant.

3. Add pasta and liquids

1. Pour in the chicken broth and milk, scraping up any browned bits from the bottom of the pan.
2. Stir in the dry pasta, making sure it lays flat and is mostly submerged. Bring to a simmer.

4. Simmer until pasta is tender

1. Reduce heat to medium-low, cover, and simmer, stirring every 4–5 minutes to prevent sticking. Cook until pasta is al dente — timing depends on pasta shape, usually 9–12 minutes.
2. If the liquid reduces too quickly before the pasta is cooked, add up to 1/2 cup (120 ml) more broth or water.

5. Finish the sauce

1. Once the pasta is tender and sauce is creamy, stir in butter, grated Parmesan, and the reserved chicken. Heat gently for 1–2 minutes until the chicken reaches 165°F (74°C) and the cheese melts into the sauce.
2. Fold in the fresh spinach until wilted. Taste and adjust seasoning with salt and pepper.

To serve

Divide among bowls, top with extra Parmesan and chopped parsley, and squeeze a little lemon over the top if you like a bright finish.

Tips and variations

• For a lighter version, substitute half-and-half for milk or use whole-wheat pasta.
• Swap chicken for cooked shrimp or cooked sausage slices. Add them at the same stage as returning the chicken.
• Add vegetables: mushrooms, cherry tomatoes, or peas can be added when you add the pasta — sauté mushrooms first for best texture.
• For a cheesier sauce, stir in 2 oz (60 g) cream cheese with the butter before adding Parmesan.
• If using thicker pasta (like rigatoni), increase the broth by 1/2 cup (120 ml) and simmer a bit longer.

Make-ahead and storage

• Refrigerate in an airtight container for up to 3 days. Reheat gently on the stove with a splash of milk or broth to loosen the sauce.
• This dish freezes okay for up to 2 months, though texture is best when fresh.

Troubleshooting

• Sauce too thin: simmer uncovered a few minutes to reduce, or stir in an extra 1/4 cup (25 g) Parmesan.
• Sauce too thick or pasta undercooked: add a few tablespoons of hot broth or water and cook until pasta is done.
• Sticking pasta: stir more frequently while simmering and ensure enough liquid covers the pasta.

Approximate time

• Prep: 5 minutes
• Cook: 20–25 minutes
• Total: 25–30 minutes

Enjoy a cozy, cheese‑forward weeknight favorite that feels indulgent but comes together with minimal fuss.