
Crab fettuccine Alfredo brings together a delicate seafood touch with the dreamy creaminess Alfredo lovers crave. This is my go-to when I want something indulgent and special but still simple enough for a cozy dinner at home or to impress guests. Luxurious crab pairs perfectly with the silky sauce over tender noodles.
The first time I cooked this was for a holiday meal with friends and there was not a single bite left. Now whenever crab is in season I get requests for it.
Ingredients
- Fettuccine pasta: Brings a toothsome bite and holds the sauce beautifully. Choose quality pasta made from durum wheat if possible.
- Butter: Provides richness and classic Alfredo flavor. Look for European style butter for a creamier result.
- All purpose flour: Thickens the sauce and helps it coat every noodle. Sift the flour if it is clumpy for a smooth finish.
- Whole milk: Key for a silky but light sauce. Use fresh milk with a rich taste.
- Cream cheese: Gives extra body and a slight tang. Pick a brick style for best texture.
- Freshly grated Parmesan cheese: Gives sharpness and savory depth. Always grate it fresh right before using for the best melt and flavor.
- Fresh parsley: Brightens the dish and adds a fresh color. Choose vibrant green parsley with crisp leaves.
- Garlic powder and onion powder: Make the sauce aromatic and comforting. Buy fresh spices for stronger flavor.
- Salt and white or black pepper: Bring everything into balance. Taste and adjust as you go for perfect seasoning.
- Lump crabmeat: Gives sweetness and tender chunks. Always check carefully for shells and pick high quality refrigerated crab when possible.
Instructions
- Cook the Fettuccine:
- Boil a large pot of well salted water. Add the fettuccine and stir occasionally so it does not stick. Cook until just al dente, tender with a slight bite. This usually takes about ten to twelve minutes. Taste a strand to check for perfect texture. Drain the pasta well and set aside. Do not overcook or rinse so the sauce clings better.
- Make the Roux:
- In a large skillet melt the butter over medium heat. As soon as it is melted add the flour and whisk constantly for thirty to sixty seconds. This forms a smooth paste and removes any raw flour taste. Do not let it brown. You want it pale and silky.
- Create the Alfredo Sauce:
- Slowly pour in the whole milk, whisking all the while to prevent lumps. Continue whisking until the mixture is smooth and just begins to thicken. Add the cream cheese, whisk and let it melt into the sauce. Stir constantly until fully incorporated and smooth.
- Flavor and Finish the Sauce:
- Add the grated Parmesan cheese, chopped parsley, garlic powder, onion powder, salt and pepper. Stir gently as the cheese melts and the sauce becomes rich and creamy. Taste for seasoning and adjust the salt and pepper if needed.
- Add the Crab:
- Gently fold in the lump crabmeat using a spatula or large spoon. Be careful not to break up the crab too much. Warm the crab in the sauce just until heated through. Do not over stir or cook too long to keep the crab pieces tender.
- Combine and Serve:
- Either return the drained fettuccine to the skillet and toss gently with the sauce to coat every strand, or divide pasta among plates and spoon crab Alfredo sauce over each. Serve right away. Garnish with a little extra Parmesan and fresh parsley if desired.

Cream cheese is my secret weapon in Alfredo I love how it adds just enough body and tang. Most of my family did not even realize there was something extra in the sauce but once they asked for my recipe they all agreed it made the dish unforgettable.
Storage Tips
Store leftovers in an airtight container in the refrigerator for up to two days. Reheat gently in a skillet with a splash of milk or water to keep the sauce from separating. Crab does not hold as well for long periods so it is best enjoyed fresh.
Ingredient Substitutions
You can use another long pasta like linguine or tagliatelle if you do not have fettuccine. For a lighter version try half and half instead of whole milk and use Neufchâtel instead of cream cheese. If fresh parsley is not available, a sprinkle of dried works in a pinch.
Serving Suggestions
A crisp green salad with lemon vinaigrette adds a fresh bite. Garlic bread or focaccia makes a perfect side. Steamed asparagus or peas look and taste beautiful with the creamy pasta. I have even served this as a starter for a holiday meal.
Cultural Notes
Alfredo has Italian roots but the American version with cream and cheese is pure comfort food. Crab brings a special elegance but simple ingredients keep it familiar. Many coastal regions adapt Alfredo with local seafood traditions and this is a favorite among those who grew up near the sea.
Seasonal Adaptations
Fresh crab is a treat in late winter and early spring but canned high quality crab can fill the gap out of season. Try a sprinkle of lemon zest or fresh tarragon in summer for brightness. In autumn a little sautéed mushroom can make the dish extra earthy.

Whisk the sauce constantly for the silkiest texture. Never stop stirring until the cream cheese is fully blended into the sauce. Always taste the sauce before adding crab and pasta. Adjust the salt and pepper to your own taste buds. Letting the pasta finish cooking in the sauce for a minute gives it a restaurant style finish.
Recipe FAQs
- → What type of crab works best?
Lump crabmeat is ideal for its sweet flavor and large, tender pieces. Ensure it’s well picked over for shells.
- → Can I substitute the fettuccine?
Yes, linguine or tagliatelle also pair well with this creamy sauce and crab combination.
- → Should I use fresh or dried pasta?
Both work, but fresh pasta yields a softer texture that soaks up the creamy sauce beautifully.
- → How do I prevent the sauce from clumping?
Whisk the flour into melted butter thoroughly, then add milk slowly while whisking constantly for a smooth sauce.
- → Can I make this dish ahead?
It's best served fresh. If reheating, add a splash of milk to loosen the sauce and avoid overcooking the crab.