I test recipes for a living, and this Cajun Shrimp Pasta is one I come back to when I want bold flavor without a lot of fuss. It balances spice, creaminess, bright tomatoes and tender vegetables in a single skillet, so cleanup stays reasonable and dinner comes together fast. The whole-wheat linguine gives it a satisfying chew while keeping the plate feel a little lighter.
There’s comfort in the routine of a good weeknight pasta, but this one feels special — restaurant-worthy texture and a sauce that clings to every strand. The shrimp are seasoned and seared quickly so they stay plump, while the peppers and mushrooms build a savory, slightly smoky base. Finish with a touch of light cream cheese and milk to get a silky sauce without a heavy hand.
I’ll walk you through exactly what to buy, how to time everything, and the little tricks that keep those shrimp from overcooking. Follow the step-by-step directions below and you’ll have a confident, colorful dinner that feeds four and earns second-helping requests.
What You’ll Need
Ingredients
- 8 ounces whole wheat linguine noodles or pasta of your choice — hearty base; whole-wheat adds fiber and a nutty chew.
- 1 pound large shrimp (peeled and deveined)* — cooks quickly; buy similar-sized shrimp for even cooking.
- 3 teaspoons Cajun seasoning — divided, the main flavor driver; adjust to taste.
- ½ teaspoon garlic powder — divided; builds savory depth without fresh garlic burning.
- ¾ teaspoon kosher salt — divided, plus more to taste; seasons in stages for balance.
- ¼ teaspoon ground black pepper — divided; adds mild heat and aroma.
- 1 tablespoon extra-virgin olive oil — for searing shrimp; gives a clean browning.
- 2 tablespoons unsalted butter — divided; adds richness to vegetables and sauce.
- 1 medium red bell pepper — thinly sliced and halved; sweetness and color contrast.
- 1 medium orange or yellow bell pepper — thinly sliced and halved; choose for color and mild sweetness.
- 1 medium green bell pepper — thinly sliced and halved; brings brightness and texture.
- 8 ounces sliced baby bella (cremini) mushrooms — sliced; meaty texture and umami.
- 1 small bunch green onions — thinly sliced, divided; use most for garnish and some in the pan for onion lift.
- 14 ounces fire-roasted diced tomatoes — drained (1 can); smoky acidity that keeps the sauce lively.
- 1 ¼ cups nonfat milk — base for the lighter cream sauce; whisk smooth with cornstarch.
- 1 ½ tablespoons cornstarch — thickens the milk into a clingy sauce without heavy cream.
- 4 ounces light cream cheese — softened to room temperature; makes the sauce silky and tangy.
Cooking (Cajun Shrimp Pasta): The Process
- Bring a large pot of salted water to a boil. Add 8 ounces whole wheat linguine and cook according to package instructions until al dente. Drain and set aside.
- In a bowl, combine 1 pound large shrimp (peeled and deveined) with 1 teaspoon Cajun seasoning, 1/4 teaspoon garlic powder, 1/4 teaspoon kosher salt, and 1/8 teaspoon ground black pepper. Toss to coat.
- Heat 1 tablespoon extra-virgin olive oil in a large, deep skillet or Dutch oven over medium-high heat until shimmering. Add the seasoned shrimp in a single layer and cook, stirring or flipping once, until the shrimp turn pink and are just firm, about 3 to 5 minutes total. Use a slotted spoon to transfer the cooked shrimp to a large plate or bowl. Reduce heat to medium.
- Add 1 tablespoon unsalted butter to the skillet and melt over medium heat. Add 1 medium red bell pepper (thinly sliced and halved), 1 medium orange or yellow bell pepper (thinly sliced and halved), and 1 medium green bell pepper (thinly sliced and halved). Cook, stirring occasionally, for 3 minutes.
- Add 8 ounces sliced baby bella (cremini) mushrooms to the skillet, then sprinkle with 1 teaspoon Cajun seasoning, the remaining 1/4 teaspoon garlic powder, 1/2 teaspoon kosher salt, and 1/8 teaspoon ground black pepper. Sauté until the mushrooms are tender and have released their liquid, about 5 minutes.
- Add 14 ounces fire-roasted diced tomatoes (drained) to the skillet and cook until most of their liquid has evaporated, about 3 minutes.
- Stir in two-thirds of the thinly sliced small bunch of green onions. Using a large spoon, transfer the cooked vegetables to the plate or bowl with the shrimp. Set aside.
- In a large measuring cup or small bowl, whisk together 1 1/4 cups nonfat milk and 1 1/2 tablespoons cornstarch until smooth and free of lumps.
- Wipe the skillet if needed, then heat the remaining 1 tablespoon unsalted butter over medium. Pour in the milk–cornstarch mixture while whisking and continue whisking until smooth. Add 4 ounces light cream cheese (softened and added in small pieces) and whisk constantly until the cream cheese is fully incorporated and the sauce comes to a steady simmer.
- Simmer the sauce, whisking, for 2 to 3 minutes until slightly thickened and smooth. Stir in the final 1 teaspoon Cajun seasoning.
- Return the reserved vegetables and shrimp (and any juices you want to include) to the skillet with the sauce. Add the drained pasta.
- Using tongs, toss everything in the skillet until the pasta, shrimp, and vegetables are evenly coated with the sauce. Taste and adjust seasoning with additional kosher salt, ground black pepper, or Cajun seasoning if desired.
- Sprinkle with the remaining green onions and serve hot.
Top Reasons to Make Cajun Shrimp Pasta
This dish checks a lot of boxes: it’s fast, flavorful, and adaptable. You get a bold Cajun kick without reaching for heavy cream, and the combination of fire-roasted tomatoes and sautéed mushrooms gives depth that feels like more work than it actually is. If you want a weeknight meal that still impresses guests, this is it.
It’s also a one-skillet-friendly finish after the pasta cooks, so after a quick boil and a few tosses you’re done. That efficiency matters on busy evenings. Finally, it’s easy to scale: double the shrimp for a party or reduce protein and add chickpeas for a budget-friendly twist.
Low-Carb/Keto Alternatives
- Swap the linguine for spiralized zucchini or shirataki noodles to cut carbs; toss them in at the end to warm briefly so they don’t get soggy.
- Keep the sauce base but trade nonfat milk and cornstarch for heavy cream and a small amount of xanthan gum if you strictly follow keto — this will keep the sauce rich and thick without starch.
- Omit the fire-roasted tomatoes if you want fewer carbs and boost mushrooms and peppers for volume and fiber.
Cook’s Kit
A few tools make this straightforward: a large, deep skillet or Dutch oven, a good set of tongs, a slotted spoon (for removing shrimp), and a whisk for the sauce. A large pot for the pasta and a colander are essential. If you have a kitchen thermometer, shrimp are done at 120–140°F; otherwise rely on color and a firm snap.
Avoid These Traps
- Overcooking the shrimp — they cook fast. Sear in a single layer and remove as soon as they turn pink and firm.
- Letting the sauce separate — whisk the milk–cornstarch before adding, keep the heat moderate and whisk when you add the cream cheese.
- Running out of seasoning layers — the recipe seasons shrimp, vegetables, and sauce separately. Skipping steps makes the final flavor flat.
- Adding pasta too soon — make sure most tomato liquid has evaporated so the sauce doesn’t become watery when you toss everything together.
Make It Fit Your Plan
Want this to be lighter, heartier, or pantry-friendly? Use whole-wheat pasta as written for extra fiber; to make it heartier, add a cup of cooked white beans or extra mushrooms. For a pantry rescue version, swap fresh peppers for a 12-ounce bag of frozen mixed bell pepper strips (thaw and drain) and use canned shrimp or thawed frozen shrimp if fresh isn’t available.
For family meals, halve the Cajun seasoning for the kids and serve hot sauce on the side. If you’re meal-prepping for lunches, keep the sauce and pasta separate from shrimp and vegetables, then reheat gently to avoid overcooking the shrimp.
Chef’s Notes
Timing and temperature
Start the pasta shortly before you sauté the vegetables so everything finishes at the same time. Use medium-high only for the shrimp sear; reduce to medium for vegetables and sauce so nothing scorches.
Ingredient tips
Let the cream cheese come to room temperature so it blends smoothly. Drain the fire-roasted tomatoes well — they’re intentionally used for flavor more than water. Taste at the end and adjust salt; kosher salt quantities can vary by brand.
Keep It Fresh: Storage Guide
Store leftovers in an airtight container in the refrigerator for up to 3 days. When reheating, warm gently on the stovetop over low heat with a splash of milk to loosen the sauce; high heat will make the shrimp rubbery. For longer storage, you can freeze portions without pasta (shrimp and sauce freeze better without the noodles) for up to 2 months; thaw overnight in the fridge and reheat slowly.
Troubleshooting Q&A
Q: My sauce split when I added the cream cheese. What went wrong?
A: The most common cause is too-high heat or adding large cold pieces of cream cheese. Whisk constantly, add the cream cheese in small pieces, and keep the heat moderate so the sauce can emulsify.
Q: The pasta is bland after tossing — how do I fix it?
A: Taste and add small pinches of kosher salt or an extra 1/4 to 1/2 teaspoon Cajun seasoning, then toss again. A squeeze of fresh lemon can brighten it, too.
Q: My shrimp were rubbery after reheating.
A: Shrimp overcook quickly. Reheat slowly on low with a little added liquid, or reheat shrimp separately for a minute or two and fold back into warm pasta.
Save & Share
If this became a new weeknight favorite, save the recipe to your bookmarks and pin a photo to your recipe board. Tag me if you share a photo online — I love seeing how you customize it. Quick tip: a final scatter of chopped green onions and a wedge of lemon at the table will make the dish pop visually and flavor-wise.
Cajun Shrimp Pasta
Ingredients
Ingredients
- 8 ounceswhole wheat linguine noodlesor pasta of your choice
- 1 poundlarge shrimppeeled and deveined*
- 3 teaspoonsCajun seasoningdivided or to taste
- 1/2 teaspoongarlic powderdivided
- 3/4 teaspoonkosher saltdivided plus additional to taste
- 1/4 teaspoonground black pepperdivided
- 1 tablespoonextra-virgin olive oil
- 2 tablespoonsunsalted butterdivided
- 1 mediumred bell pepperthinly sliced and halved
- 1 mediumorange or yellow bell pepperthinly sliced and halved
- 1 mediumgreen bell pepperthinly sliced and halved
- 8 ouncessliced baby bella cremini mushroomssliced
- 1 smallbunch green onionsthinly sliced divided
- 14 ouncesfire-roasted diced tomatoesdrained 1 can
- 1 1/4 cupsnonfat milk
- 1 1/2 tablespoonscornstarch
- 4 ounceslight cream cheesesoftened to room temperature
Instructions
Instructions
- Bring a large pot of salted water to a boil. Add 8 ounces whole wheat linguine and cook according to package instructions until al dente. Drain and set aside.
- In a bowl, combine 1 pound large shrimp (peeled and deveined) with 1 teaspoon Cajun seasoning, 1/4 teaspoon garlic powder, 1/4 teaspoon kosher salt, and 1/8 teaspoon ground black pepper. Toss to coat.
- Heat 1 tablespoon extra-virgin olive oil in a large, deep skillet or Dutch oven over medium-high heat until shimmering. Add the seasoned shrimp in a single layer and cook, stirring or flipping once, until the shrimp turn pink and are just firm, about 3 to 5 minutes total. Use a slotted spoon to transfer the cooked shrimp to a large plate or bowl. Reduce heat to medium.
- Add 1 tablespoon unsalted butter to the skillet and melt over medium heat. Add 1 medium red bell pepper (thinly sliced and halved), 1 medium orange or yellow bell pepper (thinly sliced and halved), and 1 medium green bell pepper (thinly sliced and halved). Cook, stirring occasionally, for 3 minutes.
- Add 8 ounces sliced baby bella (cremini) mushrooms to the skillet, then sprinkle with 1 teaspoon Cajun seasoning, the remaining 1/4 teaspoon garlic powder, 1/2 teaspoon kosher salt, and 1/8 teaspoon ground black pepper. Sauté until the mushrooms are tender and have released their liquid, about 5 minutes.
- Add 14 ounces fire-roasted diced tomatoes (drained) to the skillet and cook until most of their liquid has evaporated, about 3 minutes.
- Stir in two-thirds of the thinly sliced small bunch of green onions. Using a large spoon, transfer the cooked vegetables to the plate or bowl with the shrimp. Set aside.
- In a large measuring cup or small bowl, whisk together 1 1/4 cups nonfat milk and 1 1/2 tablespoons cornstarch until smooth and free of lumps.
- Wipe the skillet if needed, then heat the remaining 1 tablespoon unsalted butter over medium. Pour in the milk–cornstarch mixture while whisking and continue whisking until smooth. Add 4 ounces light cream cheese (softened and added in small pieces) and whisk constantly until the cream cheese is fully incorporated and the sauce comes to a steady simmer.
- Simmer the sauce, whisking, for 2 to 3 minutes until slightly thickened and smooth. Stir in the final 1 teaspoon Cajun seasoning.
- Return the reserved vegetables and shrimp (and any juices you want to include) to the skillet with the sauce. Add the drained pasta.
- Using tongs, toss everything in the skillet until the pasta, shrimp, and vegetables are evenly coated with the sauce. Taste and adjust seasoning with additional kosher salt, ground black pepper, or Cajun seasoning if desired.
- Sprinkle with the remaining green onions and serve hot.
Equipment
- Large Pot
- large deep skillet
- Dutch Oven
- Slotted Spoon
- large plate or bowl
- measuring cup or small bowl
- Whisk
- Tongs
Notes
TO STORE: Refrigerate pasta in an airtight storage container for up to 3 days.
TO REHEAT: Gently rewarm leftovers in a Dutch oven on the stovetop over medium-low heat or in the microwave.
TO FREEZE: Freeze pasta in an airtight, freezer-safe storage container for up to 3 months. Let thaw overnight in the refrigerator before reheating.
