Spicy Shrimp Pasta with Cajun Butter Sauce
This bold and creamy Spicy Shrimp Pasta is loaded with juicy Cajun-seasoned shrimp, tender penne, and a rich buttery sauce that comes together in just 30 minutes.
The Spicy Shrimp Pasta That Will Become Your New Weeknight Obsession
If you have been searching for the best Cajun shrimp pasta that tastes like it came straight out of a restaurant kitchen, your search ends here. This recipe delivers bold, smoky heat from scratch in just 30 minutes, with plump juicy shrimp, silky cream sauce, and enough spice to make every single bite exciting. It is the kind of dish that makes everyone at the table go quiet for a moment, and then immediately ask for seconds.
Whether you are a devoted fan of easy Cajun shrimp pasta recipes on a busy weeknight or you are cooking to impress on a Friday night, this one delivers every single time.
Why This Recipe Works
A lot of shrimp pasta recipes end up bland or watery. This one avoids both traps. Here is what makes it different:
- Dry shrimp = better sear. Patting the shrimp completely dry before seasoning is the single biggest upgrade you can make. It gives you that gorgeous golden crust instead of steaming.
- Layered Cajun flavor. The seasoning goes on the shrimp and into the sauce, so the spice is deep and well-rounded, not just a surface dusting.
- Reserved pasta water is your best friend. That starchy water lets you control the sauce consistency perfectly without diluting the flavor.
- Finishing with butter and lemon. This two-step move at the end adds richness and brightness that pulls the whole dish together.
Chef's Tip: Do not walk away from the shrimp once they hit the pan. They cook in under 2 minutes per side. Overcooked shrimp are rubbery, and that is the fastest way to ruin an otherwise perfect pasta.
What You Will Need
The ingredient list is simple and built around things you likely already have. The shrimp are the star, so buy the best you can find. Fresh or thawed-from-frozen both work well as long as they are peeled, deveined, and fully dry before cooking.
For the pasta shape, penne is the classic choice for a reason. The ridges and hollow tubes trap every drop of that creamy Cajun butter sauce. Rigatoni is an excellent substitute if that is what is in your pantry.
Using quality tools and ingredients genuinely elevates a recipe like this. A heavy cast iron skillet gives you the high, even heat needed to properly sear the shrimp and build a flavorful fond for the sauce.
The Cajun Seasoning Question
Store-bought Cajun blends are perfectly fine here, and many brands are excellent for an easy Cajun shrimp pasta recipe. However, if you want to control the heat level, making your own takes about 2 minutes and uses spices already in your cabinet: smoked paprika, garlic powder, onion powder, cayenne, dried oregano, dried thyme, salt, and black pepper.
For this recipe, we use 2 teaspoons split between the shrimp and the sauce. If you love serious heat, push it to 2.5 teaspoons and add an extra pinch of cayenne. If you are cooking for people who are sensitive to spice, dial the red pepper flakes back and use a mild Cajun blend.
A note on the cream: Do not let the sauce boil aggressively once the heavy cream is in. A gentle simmer is all it needs to thicken beautifully without breaking.
Variations Worth Trying
Once you have the base recipe down, it is easy to riff on it:
- Cajun salmon and shrimp pasta: Sear a seasoned salmon fillet first, flake it into large pieces, and fold it back in at the end. It is stunning.
- Ground beef and shrimp pasta: Brown seasoned ground beef in the pan before building the sauce for a heartier, surf-and-turf style bowl.
- Penne swap: Try it with fettuccine or linguine for a more elegant presentation when serving guests.
- Crockpot version: Build the sauce in your slow cooker and stir in pre-cooked shrimp and pasta at the end. It is an easy Cajun shrimp pasta crockpot option that works great for meal prep.
Ready to make this bold, creamy, perfectly spiced pasta yourself? Here is everything you need:
Spicy Shrimp Pasta with Cajun Butter Sauce
This bold and creamy Spicy Shrimp Pasta is loaded with juicy Cajun-seasoned shrimp, tender penne, and a rich buttery sauce that comes together in just 30 minutes.
Ingredients
- 12 oz penne pasta, or rigatoni
- 1 1/4 lb large shrimp, peeled and deveined, tails off
- 2 tsp Cajun seasoning, divided, store-bought or homemade
- 1/2 tsp smoked paprika
- 1/4 tsp red pepper flakes, adjust to taste
- 3 tbsp unsalted butter, divided
- 1 tbsp olive oil, extra virgin
- 5 garlic cloves, minced
- 1 yellow onion, finely diced
- 1 red bell pepper, thinly sliced
- 1 cup heavy cream
- 1/2 cup chicken broth, low sodium
- 14 oz diced tomatoes, canned, drained
- 1/2 cup parmesan cheese, freshly grated, plus more for serving
- 3 tbsp fresh parsley, chopped, for garnish
- 1/2 lemon, juiced
- 1 tsp kosher salt, plus more for pasta water
Instruction
Bring a large pot of heavily salted water to a boil. Cook the penne according to package directions until al dente. Reserve 0.5 cup of pasta water before draining. Drain and set aside.
While the pasta cooks, pat the shrimp completely dry with paper towels. Toss them in a bowl with 1.5 tsp of Cajun seasoning, smoked paprika, and a pinch of salt until evenly coated.
Heat 1 tbsp of butter and the olive oil in a large skillet or cast iron pan over medium-high heat. Once shimmering, add the shrimp in a single layer. Cook for 1 to 2 minutes per side until pink and just opaque. Do not overcook. Transfer to a plate and set aside.
Reduce the heat to medium. Add another 1 tbsp of butter to the same pan. Add the diced onion and sliced red bell pepper. Cook, stirring occasionally, for 4 to 5 minutes until softened.
Add the minced garlic and red pepper flakes to the pan. Stir and cook for 30 seconds until fragrant.
Pour in the chicken broth and scrape up any browned bits from the bottom of the pan. Add the drained diced tomatoes and the remaining 0.5 tsp of Cajun seasoning. Stir to combine and simmer for 2 minutes.
Reduce heat to medium-low and pour in the heavy cream. Stir and let the sauce simmer gently for 3 to 4 minutes until it begins to thicken slightly.
Add the drained pasta to the skillet and toss to coat. If the sauce feels too thick, splash in a little reserved pasta water to loosen it to your liking.
Stir in the remaining 1 tbsp of butter, the grated parmesan, and the lemon juice. Toss until the cheese melts into the sauce.
Return the cooked shrimp to the pan and gently fold them in. Cook for 1 minute just to rewarm. Taste and adjust seasoning.
Serve immediately, topped with fresh parsley and extra parmesan. A pinch of red pepper flakes on top never hurts.
Equipment
- Large pot
- Large skillet or cast iron pan
- Colander
- Tongs
- Measuring cups and spoons
- Microplane or box grater
Notes
Serving and Storing
Serve this pasta hot, straight from the pan, topped with a flurry of freshly grated parmesan and chopped parsley. A wedge of crusty bread on the side for sauce-scooping is highly recommended.
Leftovers keep well in the refrigerator for up to 3 days in an airtight container. Reheat gently on the stovetop over low heat with a splash of chicken broth or cream to loosen the sauce back up. Avoid the microwave if you can, as it tends to make the shrimp tough.
This pasta does not freeze well due to the cream-based sauce, so plan to enjoy it within a few days. Given how good it is, that has never been a problem.
