Alfredo is the pasta my kids will always say yes to. It is also the pasta I have made so many times I could do it half asleep.
That is the problem. They are getting older, and I want them eating something with a little more going on than cream and Parmesan. Not hot. Just seasoned. This Cajun shrimp pasta is where I started.
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The heat is mild and it is completely in your hands, because you decide how much Cajun seasoning goes in. The sauce is still creamy enough to feel familiar, so it does not land like a whole different dinner. Just a more interesting one.
Cream cheese is doing that work. It melts straight into the pan and thickens the sauce on its own, so there is no roux and no standing over a pot reducing cream. About 30 minutes, start to finish.
If your family is not quite there yet, creamy Cajun Alfredo pasta with chicken is the gentler step. And on the nights nobody wants to negotiate, chicken fettuccine Alfredo is still on the site.
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Why Cream Cheese Instead of a Roux
A roux works. It also means cooking flour in butter, whisking in liquid slowly so it does not go lumpy, and then simmering long enough that the sauce stops tasting like raw flour. That is three separate things to get right before the shrimp has even hit the pan.
Cream cheese skips all of it. It melts into the hot pan and thickens as it goes, so the sauce comes together in the same few minutes you are already standing there.
It also holds up better here. Cream cheese is cultured, so it is already slightly acidic, which means it does not seize when it meets the diced tomatoes the way plain cream sometimes will.
Leave it out and you still have a Cajun shrimp pasta, just a thinner one. The sauce pools at the bottom of the bowl instead of coating the fettuccine.
Cut it into cubes before it goes in. Cold blocks melt unevenly and leave streaks.
Ingredients
- Fettuccine. Flat strands hold a cream sauce better than tubes do, so more of it ends up on the pasta instead of pooling at the bottom of the bowl. Penne or rigatoni work if that's what's open, they just carry less sauce per bite. Reserve some of the cooking water before you drain.
- Butter. Sears the shrimp and starts the sauce in the same pan, so the browned bits from the shrimp end up in the sauce instead of getting washed down the sink.
- Shallots. Softer and sweeter than yellow onion, and they melt into the sauce instead of staying crunchy. Yellow onion works in a pinch, just chop it fine so it softens in the same few minutes.
- Garlic. Goes in after the shallots and cooks for about a minute. Any longer and it browns, and browned garlic turns bitter in a cream sauce with nothing to hide behind.
- Shrimp. Go large. Smaller shrimp cook through in the time it takes to sear them, and this shrimp goes back into a hot pan at the end, so anything small comes out rubbery. Frozen is fine. Thaw it and pat it dry, because wet shrimp steams instead of searing.
- Cajun seasoning. Half goes on the shrimp, half into the sauce. Seasoning the shrimp directly is what makes the shrimp taste seasoned rather than just sauced. Brands vary a lot in salt and heat, so taste the sauce before you decide it needs more.
- Fresh Diced tomatoes. These cut the richness. Without them the sauce is heavy in a way that gets tiring three bites in.
- Heavy cream. Thins the cream cheese into something pourable and carries the seasoning through the whole dish. Evaporated milk works if you don't keep cream around. Skip Greek yogurt, it splits against the tomatoes.
- Cream cheese. The thickener, and the reason there's no roux here. Cut it into cubes while the pasta boils so it melts evenly instead of leaving streaks. Full-fat gives you the smoothest sauce.
- Parsley. Goes in at the end. Grassy and sharp against all that cream, and it's the only green on the plate.
See recipe card for quantities.
How To Make Cajun Shrimp Pasta
- Boil the pasta. Bring a large pot of well-salted water to a boil. This is the only chance you get to season the pasta itself, so don't be shy with the salt.
- Cook the fettuccine. Add the pasta and cook to al dente, following the package. Reserve some of the pasta water before you drain. It's starchy, and it's what you'll use to loosen the sauce at the end.
- Cube the cream cheese. Do this while the pasta boils. Cold blocks melt unevenly and leave streaks in the sauce.
- Soften the shallots. Melt the butter in a large skillet over medium heat. Add the shallots and cook 2 to 3 minutes until soft. Add the garlic and cook about a minute more, just until fragrant. Don't let either brown. Push them to the side of the pan.
- Sear the shrimp. Raise the heat to medium-high, add the shrimp, and season with half the Cajun seasoning. Cook 1 to 2 minutes per side, until pink and just opaque. Pull them out and set them aside. They'll finish cooking when they go back into the sauce, so undercooking slightly here is the right call.
- Build the sauce. Lower the heat to medium. Add the tomatoes and cook 1 to 2 minutes. Pour in the cream, then add the cream cheese, the rest of the Cajun seasoning, and the black pepper. Whisk until the cream cheese has fully melted and the sauce is smooth. Keep it at a gentle simmer, never a hard boil, or the tomatoes and cream can separate.
- Bring it together. Add the pasta and shrimp back to the pan and toss until everything is coated. If the sauce is tight, add reserved pasta water a tablespoon at a time until it loosens.
- Finish. Stir in the parsley and let it go another minute. Taste and adjust the salt and Cajun seasoning now, before it hits the plate. Serve right away, with grated Parmesan if you want it.
Keeping the Sauce from Splitting
Cream, cream cheese, and tomatoes in one pan can break on you. It doesn't usually, but when it does you get a grainy sauce with oil on top.
Heat is almost always why. Cream holds at a gentle simmer and separates at a hard boil. Once the cream goes in, you want small bubbles at the edge of the pan, not a rolling boil in the middle.
Give the fresh tomatoes a minute or two before the cream. They release a lot of water, and cooking it off first means you're not raising the heat later to boil it away, which is what breaks the cream.
Let the cream cheese melt fully before anything else goes in. Cubed melts smooth. A cold block leaves lumps, and chasing lumps with higher heat lands you right back at a boil.
If it does break: pull the pan off the heat, add a splash of pasta water, whisk hard. The starch pulls the fat back in.
Rose's Top Tips
- Buy shrimp larger than you think you need. Big shrimp are forgiving. They stay tender through the sear and the minute they spend back in the sauce. Small ones go from done to rubbery in the time it takes to flip them.
- Pat the shrimp dry before it hits the pan. Wet shrimp steams instead of searing, and you lose the browned bits stuck to the bottom of the skillet. Those bits are free flavor that ends up in the sauce.
- Start light with the Cajun seasoning. Brands vary a lot in salt and heat, so taste the finished sauce before adding any extra. You can always add more, but you can't take it out.
- Undercook the shrimp on purpose. It goes back into a hot pan at the end and keeps cooking there. Pull it when it's just turned pink, not when it looks fully done.
- Cube the cream cheese while the pasta boils. Thirty seconds of prep, and it's the difference between a smooth sauce and one you're whisking lumps out of over heat you shouldn't be using.
Variations
- Add smoked sausage. Andouille if you can find it, kielbasa or any smoked sausage if you can't. Slice it into rounds and brown it in the butter before the shallots go in, then set it aside with the shrimp and add it back at the end. The rendered fat stays in the pan and goes into the sauce. This is the most common version of Cajun shrimp pasta on other sites, so it's worth naming as an option even though the recipe doesn't need it.
- Swap the shrimp for chicken. Slice a breast thin so it cooks through in about the same time. Season it the same way, sear it, set it aside. Scallops work too, and they cook even faster than shrimp, so pull them the moment they're opaque.
- Add bell pepper. Chop it and add it with the shallots so it has time to soften.
- Add mushrooms. Slice and brown them in the butter before the shallots. They need direct contact with the pan to color properly, so give them room and don't crowd them.
- Stir in spinach at the end. A few handfuls go in with the parsley and wilt in the residual heat. Easiest way to get a vegetable in without another pan.
What to Serve With It
The sauce is rich, so what goes next to it should be sharp or crunchy rather than more of the same.
- A simple green salad with a lemony dressing. The acid resets your palate between bites. Skip anything creamy here, it's redundant.
- Garlic bread. For the sauce left in the bowl, which is the point.
- Garlic green beans. They cook faster than the pasta and the garlic ties the two plates together.
- Roasted broccoli or asparagus. Roast at high heat so the edges char. Bitter and browned holds up next to cream in a way steamed vegetables don't.
Keep the portions modest. This is a filling plate on its own, and the sides are there for contrast more than volume.
Storage and Reheating
- Refrigerator. Let it cool, then store in an airtight container for 3 to 4 days.
- Reheating. Add a splash of milk, cream, or water before you warm it. The pasta keeps absorbing sauce in the fridge, so what looked saucy last night will be dry today. Reheat in a skillet over medium-low, stirring, or in the microwave in short bursts with a stir between each. Low and slow either way. High heat splits the sauce, the same as it does when you're making it.
- Freezing. I wouldn't. Cream sauces separate on thawing and shrimp goes rubbery when it's cooked twice.
- Leftover shrimp. If you know going in you'll have leftovers, hold some shrimp back and add it fresh when you reheat. Reheated shrimp is the weak point of this dish, not the sauce.
Recipe FAQs
Yes. Fettuccine holds the most sauce, but linguine, penne, or rigatoni all work. Shorter shapes carry less sauce per bite, so you may want a little extra pasta water to loosen things at the end.
Yes, and most shrimp at the counter was frozen anyway. Thaw it in the refrigerator overnight or under cold running water, then pat it dry with paper towels. Wet shrimp steams in the pan instead of searing.
It varies a lot by brand, in heat and in salt. That's why the seasoning is split between the shrimp and the sauce here. Hold back the second half until the end, taste, and add from there.
Almost always heat. Cream separates at a hard boil. Pull the pan off the burner, add a splash of pasta water, and whisk hard. The starch helps pull it back together.
Yes, drain them well first. Fresh tomatoes cook down in a couple of minutes and taste cleaner, but canned works if that's what's on hand.
Not really. Shrimp and cream sauce are both at their best the moment they're done. You can chop the shallots, garlic, and tomatoes ahead, which is most of the prep anyway.
You can, but you'd be making a different sauce. The cream cheese is what thickens it without a roux. Without it you'd need to reduce the cream longer, and it still won't coat the pasta the same way.
More Pasta Recipes For Dinner
- Spicy Pumpkin Pasta with Cream Cheese: Same cream cheese trick as this one, different season. Thickens on its own, no roux.
- Creamy Cajun Alfredo Pasta with Chicken: Same seasoning, gentler landing. Where to start if shrimp is a hard sell at your table.
- Pasta with Bacon and Peas: Four main ingredients and no chopping. The one for nights when even 30 minutes feels like a lot.
- Chicken Fettuccine Alfredo: The one everybody agrees on. Worth having on hand for the weeks you don't want a discussion about dinner.
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Creamy Cajun Shrimp Pasta with Cream Cheese
Equipment
- 1 large pot for pasta
- 1 skillet or large pan
Ingredients
- 1 8 oz Fetuccine pasta
- 2 tablespoon olive oil
- 2 tablespoons Butter
- 2 pcs shallots (small) finely chopped
- 4 cloves garlic finely minced
- 1 pound shrimp peeled and deveined
- 1 tablespoon cajun seasoning add more if needed
- ¾ cup tomatoes diced
- 1½ cup heavy cream
- ⅓ cup cream cheese
- 1 pinch black pepper
- 1 pinch salt to taste
- ¼ cup pasta water reserved
- ¼ cup parsley leaves finely chopped
- ¼ cup parmesan cheese grated
Instructions
- Bring a large pot of well-salted water to a boil. Start the sauce while the pasta cooks so both finish together.
- Add the fettuccine and cook to al dente per package directions. Reserve ½ cup of pasta water before draining.1 8 oz Fetuccine pasta
- While the pasta cooks, cut the cream cheese into cubes and set aside.⅓ cup cream cheese
- Heat the olive oil and butter in a large skillet over medium heat. Add the shallots and cook 2 to 3 minutes until softened. Add the garlic and cook 1 minute more, until fragrant. Do not let either brown.2 tablespoon olive oil, 2 tablespoons Butter, 2 pcs shallots (small), 4 cloves garlic
- Raise the heat to medium-high. Add the shrimp and season with half the Cajun seasoning. Cook 1 to 2 minutes per side, until pink and just opaque. Remove the shrimp and set aside.1 pound shrimp, 1 tablespoon cajun seasoning
- Lower the heat to medium. Add the diced tomatoes and cook 2 to 3 minutes, until softened and most of their liquid has cooked off.¾ cup tomatoes
- Pour in the heavy cream, then add the cream cheese, the remaining Cajun seasoning, and the black pepper. Whisk until the cream cheese melts and the sauce is smooth. Keep it at a gentle simmer, never a hard boil.1 tablespoon cajun seasoning, 1½ cup heavy cream, ⅓ cup cream cheese, 1 pinch black pepper, 1 pinch salt to taste
- Return the pasta and shrimp to the pan and toss to coat. Add reserved pasta water a tablespoon at a time if the sauce is too thick.¼ cup pasta water
- Stir in the parsley and simmer 1 minute more. Taste and adjust salt and Cajun seasoning. Serve immediately with grated Parmesan.¼ cup parsley leaves, ¼ cup parmesan cheese
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