30-Minute Creamy Seafood Fettuccine Alfredo
This 30-Minute Creamy Seafood Fettuccine Alfredo is the kind of dinner that feels fancy without keeping you in the kitchen all night. A silky, garlicky sauce clings to tender shrimp and sweet scallops, all tossed with al dente fettuccine.
It’s rich but surprisingly well-balanced, and it all comes together in one skillet while the pasta boils.
What Makes This Alfredo So Good
The sauce is the star here. Heavy cream, freshly grated Parmesan, and a little butter melt into a blanket that coats every strand without sitting heavy.
I keep the seafood simple with shrimp and scallops because they cook fast and stay tender. A splash of starchy pasta water brings everything together at the end so the sauce clings instead of pooling.
Ingredients
- 12 oz fettuccine: or other long pasta like linguine
- 8 oz large shrimp, peeled and deveined: tails on or off as you like
- 8 oz sea scallops: halved crosswise if large, dried well
- 1 tbsp olive oil
- 3 tbsp unsalted butter: divided
- 4 cloves garlic: minced
- 1½ cups heavy cream: at room temperature
- 1 cup freshly grated Parmesan cheese: plus more for serving
- ⅛ tsp freshly grated nutmeg: optional, but it softens the richness
- Salt and black pepper
- Chopped fresh parsley: for serving
Variations / Substitutions
- All shrimp: If scallops aren’t your thing, double the shrimp.
- Add crab: Fold in 6 oz lump crabmeat at the very end for extra sweetness.
- No nutmeg: Leave it out; the sauce still works.
- Dairy-free: A full-fat coconut cream and a little white miso can mimic some of the creaminess, though the texture will be different.
If you enjoy rich pasta, you might also like our Cajun Shrimp Pasta.
How To Make Seafood Fettuccine Alfredo
Step 1: Sear the Seafood
Bring a large pot of salted water to a boil. Pat the shrimp and scallops very dry, then season them with salt and pepper. Heat the olive oil and 1 tablespoon of the butter in a large skillet over medium-high heat until the butter foams. Add the shrimp and cook for 2 minutes per side until pink and curled, then transfer them to a plate. Add the scallops in a single layer and cook for 2 minutes per side until they have a deep golden crust and are just opaque, then move them to the plate as well.
You’re looking for real browning on the scallops; that caramelized edge brings a sweet, nutty depth to the whole dish.
Step 2: Build the Garlic Cream Sauce
Drop the fettuccine into the boiling water and cook until al dente, about 1 minute less than the package says. Reserve 1 cup of the pasta water, then drain the pasta. In the same skillet, lower the heat to medium and melt the remaining 2 tablespoons of butter. Add the minced garlic and cook just until fragrant, about 30 seconds. Pour in the heavy cream, bring it to a gentle simmer, then stir in the Parmesan and the nutmeg. Let it bubble softly for 2 to 3 minutes until the sauce thickens enough to coat the back of a spoon. Season with salt and pepper.
At this point the sauce should still be pourable. If it tightens up too much, loosen it with a splash of that reserved pasta water.
Step 3: Toss the Fettuccine and Seafood
Add the drained fettuccine to the skillet and toss well with tongs until every strand is coated. Gently fold in the shrimp and scallops, letting them warm through for about 1 minute. Add pasta water a tablespoon at a time, tossing after each addition, until the sauce glistens and clings to the pasta just right.
The goal is a silky, glossy coating, not a pool of liquid at the bottom of the bowl. The starch in the pasta water is what makes everything come together.
Step 4: Plate and Serve with Parsley
Portion the fettuccine into warm bowls, making sure each serving gets plenty of seafood. Scatter chopped parsley over the top and finish with an extra shower of Parmesan.
Serve right away while the sauce is still loose and creamy; it thickens quickly as it cools.
Tips for the Best Seafood Alfredo
- Dry the seafood thoroughly.: Any moisture left on the shrimp and scallops will steam them instead of giving you a golden sear.
- Use freshly grated Parmesan.: Pre-grated cheese has anti-caking agents that can make the sauce grainy.
- Don’t overcook the seafood.: Shrimp and scallops turn rubbery fast; pull them as soon as they’re just opaque.
- Reserve your pasta water.: That starchy liquid is what allows the sauce to cling to every noodle.
- Warm the bowls.: Run hot water over your serving bowls before plating to keep the pasta from cooling too fast.
Use these times as a guide for perfectly cooked seafood:
| Seafood | Time per side | Visual cue |
|---|---|---|
| Large shrimp | 2 mins | Pink and tightly curled |
| Sea scallops | 2-3 mins | Golden crust, opaque |
| Crabmeat | Fold in last | Heated through |
Storing Leftover Alfredo
- Refrigerate: Store any leftovers in an airtight container for up to 3 days. The sauce will thicken in the fridge.
- Reheating: Gently warm the pasta in a skillet over low heat with a splash of water or milk, tossing until heated through. Microwaving can make the seafood rubbery.
What To Serve With Seafood Alfredo
A simple green salad with a sharp lemon vinaigrette cuts right through the richness of the sauce. Garlic bread is never a bad idea for sopping up any leftover cream. And if you want a vegetable on the side, roasted asparagus or broccolini brings a nice earthy crunch.
Frequently Asked Questions
Can I use milk instead of heavy cream?
No, milk can curdle under high heat. For a lighter sauce, half-and-half works but won’t be as silky.
Can I make this ahead of time?
The sauce is best freshly made, and the seafood overcooks when reheated. If you need to work ahead, cook the sauce and pasta separately, then combine and warm the seafood just before serving.
Why did my sauce turn out grainy?
Grainy sauce usually comes from pre-grated Parmesan or too much heat. Use freshly grated cheese and keep the pan at a low simmer once it’s added.
Can I use frozen seafood?
Yes. Thaw it completely and pat it very dry before searing to avoid a watery sauce.
Seafood Fettuccine Alfredo Recipe
Ingredients
Method
- Pat shrimp and scallops dry; season with salt and pepper. Heat olive oil and 1 tbsp butter in a large skillet over medium-high. Sear shrimp 2 min per side until pink; remove. Sear scallops 2 min per side until golden and just opaque; remove.
- Cook fettuccine in boiling water until al dente, reserve 1 cup water, drain. In the same skillet over medium heat, melt remaining 2 tbsp butter and cook garlic 30 seconds. Add cream, bring to a simmer, then stir in Parmesan and nutmeg. Simmer 2-3 min until thickened; season.
- Add drained fettuccine to sauce; toss. Fold in seafood and warm through. Thin with pasta water a tablespoon at a time until sauce clings.
- Divide among warm bowls, top with parsley and extra Parmesan. Serve immediately.
