Creamy Shrimp Alfredo Fettuccine with Lemon and Parsley

Why You’ll Love This Recipe

• Silky, restaurant-style Alfredo that clings beautifully to every ribbon of fettuccine.
• Juicy garlic-butter shrimp cooked fast for tender, snappy bites.
• Ready in about 35 minutes with simple, pantry-friendly ingredients.
• Balanced richness with fresh parsley, cracked pepper, and a bright squeeze of lemon.

Grocery List

• Produce: Garlic, flat-leaf parsley, 1 lemon
• Dairy: Unsalted butter, heavy cream, Parmesan cheese
• Pantry: Fettuccine, olive oil, kosher salt, black pepper, red pepper flakes (optional)

Full Ingredients

Shrimp

• 1 lb large shrimp (16–20 count), peeled and deveined, tail-on optional
• 1/2 tsp kosher salt
• 1/4 tsp freshly ground black pepper
• Pinch red pepper flakes (optional)
• 1 tbsp olive oil
• 1 tbsp unsalted butter (for sautéing with garlic)
• 3 garlic cloves, minced (about 1 tbsp)

Alfredo Sauce & Pasta

• 12 oz fettuccine
• 2 tbsp unsalted butter (for the sauce)
• 1 cup heavy cream (240 ml)
• 1 cup finely grated Parmesan cheese (about 3 oz / 85 g), plus extra for serving
• 1/2 tsp kosher salt (adjust to taste)
• 1/4 tsp freshly ground black pepper, plus more for serving
• 2 tbsp chopped fresh parsley
• 1/2 lemon, for squeezing (about 2 tsp juice)

Step-by-Step Instructions

Step 1: Prep the shrimp and aromatics

Pat the shrimp very dry with paper towels. In a bowl, toss with 1/2 teaspoon kosher salt, 1/4 teaspoon black pepper, and a pinch of red pepper flakes if using. Mince the garlic and chop the parsley. Finely grate the Parmesan (avoid pre-shredded for best melt). Set everything within arm’s reach.

Step 2: Boil the fettuccine

Bring 4 quarts of water to a rolling boil (about 212°F). Season with 1 tablespoon kosher salt. Add the fettuccine and cook until al dente, 10–11 minutes (check package). Before draining, reserve 1 cup of the starchy pasta water. Drain but do not rinse.

Step 3: Sear the garlic-butter shrimp

Heat a large skillet over medium-high. Add 1 tablespoon olive oil. When shimmering, add shrimp in a single layer and cook 1 minute. Flip, add 1 tablespoon butter and the minced garlic, and cook 30–60 seconds more until shrimp are just opaque and pink. Transfer shrimp to a plate, scraping out any garlic if it risks over-browning. Keep the skillet for the sauce.

Step 4: Build the Parmesan cream sauce

Lower the heat to medium. Add the remaining 2 tablespoons butter to the skillet; once melted, pour in the heavy cream. Bring to a gentle simmer for 3–4 minutes, stirring frequently, until slightly thickened. Aim for small bubbles around the edges (about 180–190°F); avoid a rolling boil.

Take the skillet off the heat. Gradually whisk in the Parmesan until fully melted and smooth, 1–2 minutes. The sauce should be creamy and pourable; if too thick, whisk in a splash of reserved pasta water. Season with 1/2 teaspoon kosher salt and 1/4 teaspoon black pepper.

Step 5: Toss pasta and adjust the consistency

Add the drained fettuccine to the skillet with the sauce. Toss vigorously, adding reserved pasta water a few tablespoons at a time until the sauce is glossy and clings to the noodles. The goal is a silky coating, not a soupy pan. Keep the sauce below a simmer to prevent separation as you toss.

Step 6: Fold in shrimp and finish with parsley and lemon

Return the shrimp (and any juices) to the skillet. Sprinkle in the parsley and squeeze over about 2 teaspoons fresh lemon juice. Toss just to combine and warm through, 30–60 seconds. Taste and adjust salt, pepper, or lemon. Serve immediately with extra Parmesan and cracked black pepper.

Pro Tips

• Dry shrimp = better sear. Moisture causes steaming; pat very dry before seasoning.
• Use freshly grated Parmesan. Pre-shredded cheeses often contain anti-caking agents that prevent smooth melting.
• Control heat. Simmer cream gently (180–190°F) and avoid boiling after adding cheese to prevent graininess.
• Use pasta water to emulsify. Add in small splashes while tossing until the sauce becomes glossy and coats the pasta.
• Serve hot. Alfredo thickens as it cools—have plates ready and serve right away.

Variations

• Cajun Shrimp Alfredo: Toss shrimp with 1–1.5 teaspoons Cajun seasoning instead of plain salt/pepper; finish with lemon as directed.
• Veggie Boost: Add 1 cup blanched broccoli florets or 3/4 cup peas during Step 5 for color and freshness.
• Lighter Cream: Use 3/4 cup half-and-half plus 1/4 cup milk. Simmer briefly, then whisk 1 teaspoon cornstarch into 2 tablespoons reserved pasta water and stir in to stabilize before adding Parmesan.

Storage & Make-Ahead

Shrimp Alfredo is best fresh. If needed, refrigerate leftovers in an airtight container up to 2 days. Reheat gently in a skillet over low heat with a splash of milk, cream, or water, stirring until the sauce loosens and turns glossy. Do not boil. For make-ahead: peel/devein shrimp, mince garlic, chop parsley, and grate Parmesan up to 1 day ahead. Cook pasta and finish the sauce right before serving for best texture.

Nutrition (per serving)

Approximate: 830 calories; 42 g protein; 64 g carbohydrates; 43 g fat; 25 g saturated fat; 1,050 mg sodium; 3 g fiber; 3 g sugar. Values will vary based on brands and salt used.