Quick Creamy Cajun Shrimp Pasta in 20 Minutes
Some nights, you need a dinner that feels like a proper treat but comes together with the speed of a takeaway order. This creamy Cajun shrimp pasta is my go-to for those evenings; it’s rich, smoky, and utterly satisfying, yet I can have it on the table in under 25 minutes with just one pan to wash up afterwards.
Recipe Overview
- Prep time: 10 minutes
- Cook time: 15 minutes
- Total time: 25 minutes
- Servings: 4
- Difficulty: Easy
Why You’ll Love This Creamy Cajun Shrimp Pasta
- One-pan wonder: The sauce comes together in the same pan you cook the shrimp in, meaning minimal washing up and more time with your family.
- Speed is king: From chopping the first clove of garlic to serving the final plate, this meal is ready in 25 minutes flat — perfect for those hectic school nights.
- Pantry-friendly: Most of the ingredients are store-cupboard staples, so you can whip this up without a last-minute dash to the shops.
- Customisable heat: The Cajun seasoning provides a gentle warmth that the whole family can enjoy, but you can easily ramp up the spice for those who like it fiery.
- Make-ahead magic: You can prep the shrimp and chop the vegetables the night before, making the final cook even quicker.
Ingredients You’ll Need
- 300g dried penne or rigatoni pasta
- 400g raw king prawns, peeled and deveined
- 2 tablespoons olive oil
- 4 cloves garlic, finely minced
- 1 red bell pepper, deseeded and diced
- 1 yellow bell pepper, deseeded and diced
- 200ml double cream
- 150ml chicken or vegetable stock
- 2 tablespoons tomato purée
- 1½ tablespoons Cajun seasoning
- ½ teaspoon smoked paprika
- 50g finely grated Parmesan cheese
- Salt and freshly cracked black pepper, to taste
- Small handful of fresh parsley, chopped, for garnish
Tip: Buy your prawns already peeled and deveined to save precious minutes. If you can only find frozen, defrost them overnight in the fridge or under cold running water just before cooking.
How to Make Creamy Cajun Shrimp Pasta
- Cook the pasta: Bring a large pot of salted water to a rolling boil. Add the pasta and cook according to the packet instructions until al dente — you want it to have a slight bite in the centre. Just before draining, scoop out a mugful of the starchy pasta water and set it aside. Drain the pasta in a colander, give it a gentle shake, and leave it to sit.
- Season the shrimp: While the pasta boils, pat the prawns dry with kitchen paper. Sprinkle them with 1 tablespoon of the Cajun seasoning and a pinch of salt. Use your hands to toss everything together until each prawn is evenly coated in the deep red, fragrant spice mix.
- Cook the shrimp: Heat the olive oil in a large frying pan over a high heat. When the oil shimmers and ripples, carefully add the seasoned prawns in a single layer. Let them cook undisturbed for 90 seconds — you will see the edges turn a beautiful golden pink and hear a satisfying sizzle. Flip each prawn and cook for another 60 seconds until they are opaque, curled, and just firm to the touch. Use a slotted spoon to transfer the prawns to a clean plate, leaving the oil and browned bits in the pan.
- Sauté the aromatics: Reduce the heat to medium. Add the diced red and yellow peppers to the pan and cook for 3 minutes, stirring occasionally, until they soften and the edges begin to char slightly. The kitchen will smell sweet and smoky. Add the minced garlic and cook for a further 30 seconds until it becomes fragrant and releases its aroma — be careful not to let it burn.
- Build the creamy sauce: Stir in the tomato purée and the remaining ½ tablespoon of Cajun seasoning along with the smoked paprika. Cook for 1 minute, stirring constantly, until the purée darkens to a deeper brick-red colour. Pour in the chicken stock, scraping the bottom of the pan with a wooden spoon to lift all those tasty caramelised bits. Let it bubble for 2 minutes until reduced slightly.
- Finish the sauce: Reduce the heat to low and pour in the double cream. Stir gently until the sauce is a uniform, velvety orange colour. Sprinkle in the grated Parmesan and stir until it melts completely, creating a thick, glossy sauce that coats the back of a spoon. Taste and adjust the seasoning with salt and black pepper.
- Bring it all together: Tip the drained pasta into the pan of sauce. Use tongs to toss everything together, ensuring every piece of pasta is coated in that creamy, spiced goodness. If the sauce seems too thick, add a splash of the reserved pasta water to loosen it to your liking. Gently fold in the cooked prawns and let everything warm through for 1 minute. Sprinkle with fresh parsley and serve immediately.
Tips From My Kitchen
- Don’t overcook the prawns: They only need a couple of minutes in the pan. Overcooked prawns turn rubbery and tough. The moment they turn pink and opaque, get them out of the heat. They will finish warming through when you add them back to the sauce at the end.
- Reserve that pasta water: This is my number one tip for any creamy pasta dish. Starchy pasta water acts as a natural thickener and helps the sauce cling to the pasta beautifully. Add it a tablespoon at a time until you reach your desired consistency.
- Grate your own Parmesan: Pre-grated cheese often contains anti-caking agents that stop it from melting smoothly. Grating a block of Parmesan yourself takes just an extra minute but guarantees a silky, lump-free sauce every time.
- Prep ahead for speed: On a Sunday evening, I often measure out the Cajun seasoning, chop the bell peppers, and peel the garlic. I keep them in separate containers in the fridge. Then on a busy Tuesday, I just have to cook the pasta and throw everything in the pan. It shaves a good five minutes off the process.
- Use a large enough pan: A crowded pan will steam the shrimp instead of searing them, and you won’t get that lovely caramelised flavour. Use a large frying pan or even a wide sauté pan so everything has room to breathe. If you need to, cook the prawns in two batches.
- Adjust the spice for little ones: If you’re cooking for children, start with just 1 tablespoon of Cajun seasoning in the sauce. You can always add a pinch of cayenne pepper or extra Cajun spice to the adult portions at the table. This way, everyone gets the same meal, but the heat level is tailored to their taste.
Equipment You’ll Need
- Large pot for boiling
- Colander
- Large frying pan
- Tongs or pasta fork
Delicious Variations to Try
- Spicy Version: Add 1 teaspoon of cayenne pepper to the sauce along with the Cajun seasoning, or finely chop a fresh red chilli and sauté it with the garlic. A drizzle of hot sauce over the finished dish also works wonderfully.
- Vegetarian/Vegan Option: Swap the prawns for 250g of firm tofu, pressed and cubed, or a can of chickpeas, drained and patted dry. Use a plant-based double cream and a vegan Parmesan-style cheese. The smoky, creamy sauce works brilliantly with these substitutes.
- Different Protein: Diced chicken breast or thigh works beautifully here. Just season it with the Cajun spice and cook it through in the pan before removing it to a plate, following the same method as the shrimp. You could also use turkey steaks or even leftover roast chicken.
What to Serve With Creamy Cajun Shrimp Pasta
This pasta is hearty enough to stand on its own, but I love to balance its richness with something fresh and green. A simple side salad dressed with lemon juice and olive oil works a treat. For a more substantial meal, try it with a side of steamed green beans or a quick Quick Weeknight Roasted Veggie And Rotini Pasta Salad for a double-whammy of pasta goodness. Crusty bread is also wonderful for mopping up any leftover sauce from the pan.
Still hungry for ideas? You might also love Spicy Cajun Shrimp Boil, Spicy Cajun Shrimp Boil from our sister kitchens.
Frequently Asked Questions
Can I use a different type of pasta?
Absolutely. While penne and rigatoni hold the sauce well in their ridges, you can use any short pasta you have to hand. Fusilli, farfalle, or even spaghetti work perfectly. Just adjust the cooking time according to the packet instructions and remember to reserve some of the pasta water before draining.
How do I store and reheat leftovers?
Store any leftovers in an airtight container in the fridge for up to two days. To reheat, place the pasta in a frying pan over a low heat with a splash of milk or water to loosen the sauce. Stir gently until everything is piping hot. I wouldn’t recommend freezing this dish, as the creamy sauce can split upon thawing.
Is this dish very spicy?
Not overly so. The Cajun seasoning adds a warm, aromatic smokiness rather than intense heat. It’s generally mild enough for most palates, including older children. If you’re particularly sensitive to spice, you can reduce the Cajun seasoning to 1 tablespoon and add a little extra smoked paprika for colour and flavour.
Can I make this dish dairy-free?
Yes, you can. Replace the double cream with a full-fat coconut cream or a good-quality dairy-free single cream. Omit the Parmesan or use a dairy-free hard cheese alternative. The sauce will still be rich and creamy, though it will have a slightly different flavour profile. I find coconut cream pairs beautifully with the Cajun spices.
What if I don’t have Cajun seasoning?
No problem at all. You can make your own by combining 1 teaspoon of smoked paprika, ½ teaspoon each of garlic powder, onion powder, dried oregano, and dried thyme, and a ¼ teaspoon each of cayenne pepper and black pepper. This homemade blend will give you a very similar smoky, savoury result.
Creamy Cajun Shrimp Pasta
A rich and flavorful pasta dish featuring succulent Cajun-spiced prawns, sautéed bell peppers, and a creamy tomato-Parmesan sauce. Quick enough for a weeknight yet impressive enough for guests.
Ingredients
Method
-
Cook the pasta: Bring a large pot of salted water to a rolling boil. Add the pasta and cook according to the packet instructions until al dente — you want it to have a slight bite in the centre. Just before draining, scoop out a mugful of the starchy pasta water and set it aside. Drain the pasta in a colander, give it a gentle shake, and leave it to sit.
-
Season the shrimp: While the pasta boils, pat the prawns dry with kitchen paper. Sprinkle them with 1 tablespoon of the Cajun seasoning and a pinch of salt. Use your hands to toss everything together until each prawn is evenly coated in the deep red, fragrant spice mix.
-
Cook the shrimp: Heat the olive oil in a large frying pan over a high heat. When the oil shimmers and ripples, carefully add the seasoned prawns in a single layer. Let them cook undisturbed for 90 seconds — you will see the edges turn a beautiful golden pink and hear a satisfying sizzle. Flip each prawn and cook for another 60 seconds until they are opaque, curled, and just firm to the touch. Use a slotted spoon to transfer the prawns to a clean plate, leaving the oil and browned bits in the pan.
-
Sauté the aromatics: Reduce the heat to medium. Add the diced red and yellow peppers to the pan and cook for 3 minutes, stirring occasionally, until they soften and the edges begin to char slightly. The kitchen will smell sweet and smoky. Add the minced garlic and cook for a further 30 seconds until it becomes fragrant and releases its aroma — be careful not to let it burn.
-
Build the creamy sauce: Stir in the tomato purée and the remaining ½ tablespoon of Cajun seasoning along with the smoked paprika. Cook for 1 minute, stirring constantly, until the purée darkens to a deeper brick-red colour. Pour in the chicken stock, scraping the bottom of the pan with a wooden spoon to lift all those tasty caramelised bits. Let it bubble for 2 minutes until reduced slightly.
-
Finish the sauce: Reduce the heat to low and pour in the double cream. Stir gently until the sauce is a uniform, velvety orange colour. Sprinkle in the grated Parmesan and stir until it melts completely, creating a thick, glossy sauce that coats the back of a spoon. Taste and adjust the seasoning with salt and black pepper.
-
Bring it all together: Tip the drained pasta into the pan of sauce. Use tongs to toss everything together, ensuring every piece of pasta is coated in that creamy, spiced goodness. If the sauce seems too thick, add a splash of the reserved pasta water to loosen it to your liking. Gently fold in the cooked prawns and let everything warm through for 1 minute. Sprinkle with fresh parsley and serve immediately.
Notes
Reserve some pasta water before draining to adjust sauce consistency. For extra heat, add a pinch of cayenne pepper with the Cajun seasoning.
I make this at least once a week — it’s become a family favourite. This was inspired by a dish I had at a little restaurant in Louisiana, and I’ve tweaked it over the years to make it as quick and foolproof as possible for busy home cooks. I’d love to hear how you get on with it. Do you have a favourite weeknight pasta that saves the day in your house? Drop a comment below and share your own time-saving tips — I’m always looking for new ideas to add to my rotation.
