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Rich creamy Cajun shrimp pasta sauce coating penne and plump shrimp in a hot skillet, vibrant orange and red hues.

Cajun Shrimp Pasta

This Cajun shrimp pasta is creamy, spicy, and ready in 30 minutes. Perfect for busy weeknights when you need dinner to feel special.
Prep Time 20 minutes
Cook Time 10 minutes
Total Time 30 minutes
Course Dinner, Main Course
Cuisine American, Cajun
Servings 4
Calories 550 kcal

Equipment

  • Large Skillet
  • Large Pot
  • Box grater
  • Tongs
  • Wooden Spoon
  • Measuring Cups

Ingredients
  

  • 12 oz fettuccine or your favorite pasta
  • 1 lb large shrimp (peeled, deveined, tails off)
  • 2 tsp Cajun seasoning
  • 3 cloves garlic, minced
  • 2 tbsp tomato paste
  • 1 cup heavy cream
  • 1/2 cup low-sodium chicken broth
  • 2 tbsp unsalted butter
  • 1/2 cup grated Parmesan cheese
  • to taste salt and black pepper
  • fresh parsley (optional)
  • red pepper flakes (optional)

Instructions
 

  • Prep: Bring a large pot of salted water to a boil. While it heats, pat the shrimp dry with paper towels and toss with 1 teaspoon of the Cajun seasoning and a pinch of salt.
  • Step 1: Sear the shrimp. Heat 1 tablespoon butter in the skillet over medium-high. Add the shrimp in a single layer – don't crowd them, work in batches if needed. Cook 2 minutes per side until pink and browned in spots. Transfer to a plate and set aside.
  • Step 2: Build the base. Reduce heat to medium. Add remaining 1 tablespoon butter to the same pan. Once melted, add the garlic and cook 30 seconds until fragrant. Stir in the tomato paste and cook 1 minute, stirring constantly – it will darken and smell amazing.
  • Step 3: Make the sauce. Pour in the chicken broth, scraping up any brown bits from the bottom. Add the heavy cream and the remaining 1 teaspoon Cajun seasoning. Bring to a gentle simmer and let it cook for 3 minutes, stirring occasionally. The sauce will thicken slightly.
  • Step 4: Cook the pasta. Meanwhile, add the fettuccine to the boiling water and cook 1 minute less than the package says (it will finish cooking in the sauce). Drain, reserving 1/2 cup pasta water.
  • Step 5: Combine. Add the drained pasta to the skillet with the sauce. Toss to coat, using tongs. If the sauce seems too thick, splash in some of the reserved pasta water a tablespoon at a time until it loosens.
  • Step 6: Finish. Remove from heat. Stir in the Parmesan cheese and toss until melted and creamy. Return the shrimp to the pan, gently mixing them in. Taste and adjust salt and pepper.
  • Step 7: Serve. Divide among bowls. Top with a sprinkle of fresh parsley, red pepper flakes if you like heat, and extra Parmesan. Eat immediately – this one doesn't reheat beautifully because the sauce can separate (see the meal prep notes for how to handle leftovers).

Notes

Things I Wish I'd Known: 1) Pat the shrimp bone-dry before searing for a crust. 2) Don't skip the tomato paste cooking time – it needs that full minute to lose its raw edge. 3) Pasta water is liquid gold for emulsifying the sauce. 4) Let the sauce simmer for 3 minutes before adding pasta. For meal prep: Store pasta, sauce, and shrimp separately. Reheat gently with a splash of broth. Not recommended for freezing the whole dish, but sauce can be frozen for up to 2 months. Swaps: Dairy-free – use full-fat coconut cream and omit Parmesan. Gluten-free – use GF pasta and extra pasta water. Kid-friendly – reduce Cajun seasoning to 1 tsp total and skip red pepper flakes. Extra veggie – add halved cherry tomatoes with garlic or stir in spinach at the end.
Keyword cajun shrimp pasta, creamy pasta, weeknight dinner