Creamy Cajun Shrimp Fettuccine
This creamy Cajun shrimp fettuccine is saucy, peppery, a little spicy, and exactly what I want when plain pasta just isn’t going to cut it.
Juicy shrimp, strips of red pepper, and ribbons of fettuccine get tossed through a rich Cajun cream sauce that coats absolutely everything.


I could happily eat a bowl of creamy pasta any night of the week, but adding Cajun shrimp makes it considerably harder to leave any behind.
The shrimp cook quickly and stay juicy, with plenty of Cajun seasoning giving them that warm, slightly smoky kick.
Then they go straight into a creamy sauce with red bell pepper, garlic, herbs, and enough seasoning to make sure the pasta isn’t doing all the heavy lifting.
Fettuccine works especially well here because those wide strands grab onto the sauce instead of leaving half of it sitting at the bottom of the plate.
It’s rich, but the peppers and fresh parsley keep things from getting too heavy.
And despite looking like a dinner you’d order out, this creamy Cajun shrimp fettuccine is wonderfully uncomplicated to make at home.
Why You’ll Love This Pasta
The sauce is creamy, but it does not feel heavy in a claggy way.
It coats the fettuccine properly and clings to the shrimp without turning into glue.
The shrimp cook quickly, which means dinner comes together faster than people expect.
The red bell peppers stay slightly tender and add just enough texture to stop the whole thing feeling too soft.
And the Cajun seasoning gives the sauce real personality.
Not aggressive.
Not harsh.
Just enough to make it taste like more than plain cream pasta.
Ingredients
This serves 4.
For the pasta
- 300g fettuccine
For the shrimp
- 450g raw peeled shrimp, deveined
- 1 tablespoon olive oil
- 1 teaspoon Cajun seasoning
- ¼ teaspoon smoked paprika
- ¼ teaspoon black pepper
- ¼ teaspoon salt
For the sauce
- 1 tablespoon butter
- 1 red bell pepper, sliced into short thin strips or chunky narrow pieces
- 3 garlic cloves, finely minced
- 1 tablespoon Cajun seasoning
- ½ teaspoon smoked paprika
- 250ml double cream
- 120ml chicken stock
- 60g finely grated Parmesan
- ½ teaspoon black pepper
- Salt, to taste
To finish
- 2 tablespoons chopped fresh parsley
- Extra black pepper, if you like
A Quick Note About the Shrimp
Medium to large shrimp work best here.
You want them big enough to stay noticeable in the pasta, but not so huge that they take over the plate.
Once cooked, they should be pink, curled, and still juicy.
The minute shrimp go rubbery, the whole mood drops.
So the trick is simple.
Cook them fast, then stop.
Cook the Pasta First
Get the pasta going before you start the sauce.
That makes the timing much easier, and it means you can bring everything together while the pasta is still hot.
- Bring a large pot of well-salted water to the boil.
- Add the fettuccine.
- Cook until al dente according to the packet instructions.
- Before draining, scoop out about 120ml of the pasta water and set it aside.
- Drain the pasta and leave it nearby.
Do not rinse it.
That starchy surface helps the sauce cling properly, which is exactly what you want.
Season and Cook the Shrimp
The shrimp only need a quick toss in seasoning before they hit the pan.
- Pat the shrimp dry with kitchen paper.
- Place them in a bowl.
- Add the olive oil, 1 teaspoon Cajun seasoning, smoked paprika, black pepper, and salt.
- Toss until evenly coated.
Now heat a large skillet or sauté pan over medium-high heat.
- Add the shrimp in a single layer.
- Cook for about 1 to 2 minutes on the first side.
- Turn and cook for another 1 minute or until just pink and cooked through.
- Transfer the shrimp to a plate.
They will finish spending a little more time in the sauce later, so do not overdo it now.
That is the easiest way to keep them tender.
Start the Sauce
Use the same pan.
That way all the flavour left behind from the shrimp gets worked straight into the sauce.
- Lower the heat to medium.
- Add the butter.
- Once melted, add the sliced red bell pepper.
- Cook for 3 to 4 minutes, stirring now and then, until the pepper softens slightly but still keeps some bite.
You do not want the pepper cooked down to mush.
It should still look fresh and hold its shape in the finished pasta.
- Add the minced garlic.
- Stir for about 30 seconds.
- Add 1 tablespoon Cajun seasoning and the extra smoked paprika.
- Stir again for another 20 to 30 seconds.
That quick moment in the butter wakes everything up.
It smells very good, and yes, this is usually the point where people start wandering into the kitchen asking what you are making.
Make It Creamy
Now the pan starts turning into actual dinner.
- Pour in the chicken stock.
- Stir and let it bubble for about 1 minute.
- Pour in the double cream.
- Add the black pepper.
- Stir well and let the sauce simmer gently for 2 to 3 minutes.
Once the sauce has slightly thickened:
- Add the Parmesan.
- Stir until melted and smooth.
The sauce should be creamy and glossy, not thick like paste.
If it starts looking too tight, do not panic.
That is exactly why you saved the pasta water.
Bring Everything Together
This is the part where it all starts looking properly irresistible.
- Add the cooked fettuccine to the pan.
- Toss it gently through the sauce.
- Add a splash of the reserved pasta water if needed to loosen it.
- Return the cooked shrimp to the pan.
- Add most of the chopped parsley.
- Toss everything together until the shrimp are warmed through and the pasta is evenly coated.
The sauce should hug the pasta rather than pool in a sad puddle underneath it.
You want creamy, silky strands with shrimp tucked all through and little pieces of red pepper catching in between.
Taste it before serving.
If it needs a touch more salt, add it now.
Cajun seasoning and Parmesan both bring salt already, so it is better to adjust at the end rather than throw too much in early.
Serve It Straight Away
Creamy pasta waits for nobody.
Once it is ready, plate it up while the sauce is still loose and glossy.
- Divide the pasta between bowls or plates.
- Make sure each serving gets a good amount of shrimp and red pepper.
- Scatter over the remaining parsley.
- Add a little extra black pepper if you like.
That is all it needs.
No extra fuss.
No unnecessary toppings trying to steal attention.

Tips for the Best Cajun Shrimp Pasta
Use fettuccine or another long pasta
The long strands work beautifully with this kind of sauce.
They hold onto the cream well and make the dish feel generous and properly comforting.
Don’t overcook the shrimp
This one is worth repeating because shrimp are unforgiving.
As soon as they turn pink and curl, they are basically done.
Keep the peppers slightly firm
They should soften, but still have a bit of life to them.
That texture is important.
Use pasta water wisely
A little splash can completely fix a sauce that feels too thick.
Add it slowly though.
You can always add more, but you cannot un-add it.
Grate your own Parmesan if possible
It melts better and gives the sauce a smoother finish.
The pre-grated stuff can sometimes turn a sauce a bit grainy, and nobody wants that.
What to Serve With It
This pasta already does a lot on its own, so you do not need much.
If you want to round it out, keep things simple.
Good options include:
- Garlic bread
- A crisp green salad
- Roasted broccoli
- Steamed green beans
- A simple tomato salad
Personally, I would go with a green salad or garlic bread and call it a very solid evening.
Q&A
Can I use pre-cooked shrimp?
You can, but raw shrimp are much better here.
Pre-cooked shrimp can turn tough very quickly once reheated in sauce.
If you do use them, only stir them in right at the end just long enough to warm through.
Is this very spicy?
Not wildly.
It has warmth and plenty of flavour, but the cream softens the spice quite a bit.
If you want it hotter, add a pinch of chilli flakes or a little extra Cajun seasoning.
Can I use another pasta shape?
Yes.
Linguine works really well, and even spaghetti will do the job.
I would stay with a long pasta though, because it suits the sauce best.
Can I make it without Parmesan?
Yes, but the Parmesan gives the sauce more depth and helps it taste fuller.
If you leave it out, the sauce will still be creamy, just a little less rounded.
Can I add more vegetables?
You can, but keep some restraint.
Too many extras will pull it away from the creamy shrimp-and-pepper feel.
If you want to add something else, spinach is probably the easiest option.
How do I store leftovers?
Store leftovers in an airtight container in the fridge for up to 2 days.
Reheat gently in a pan over low heat with a splash of water, milk, or cream to loosen the sauce.
Storage and Leftovers
Creamy pasta is always best fresh, but leftovers are still worth saving.
- Let the pasta cool.
- Store it in an airtight container in the refrigerator for up to 2 days.
- Reheat gently on the hob or in the microwave.
- Add a splash of milk, cream, or water to loosen the sauce.
The sauce will thicken once chilled.
That is normal.
It just needs a little help coming back to life.
Final Thoughts
This is one of those dinners that feels far more luxurious than the actual effort involved.
The shrimp cook in minutes, the sauce comes together in one pan, and the pasta does exactly what good pasta should do, which is carry all that creamy, spicy, savoury goodness without complaint.
The red pepper gives it colour and a little sweetness, the parsley freshens everything up, and the Cajun cream sauce pulls the whole thing together beautifully.
If you like your pasta rich, silky, and full of flavour, this one is going to make a very strong case for itself.
