Creating Shrimp & Crab Pasta with Creamy Cajun Sauce is straightforward if you follow these simple steps:

1. Cook the Pasta: Bring a large pot of salted water to a boil. Add the linguine or fettuccine and cook according to package instructions until al dente. Drain and set aside.

2. Sauté Shrimp: In a large skillet, heat the olive oil over medium heat. Add the shrimp and season with salt and pepper. Sauté for about 2-3 minutes until shrimp turn pink. Remove from the skillet and set aside.

3. Sauté Vegetables: In the same skillet, add the diced onion and bell pepper. Sauté until the onion becomes translucent, about 3-4 minutes. Stir in the minced garlic and cook for another minute.

4. Create the Sauce: Pour in the chicken broth and heavy cream. Bring the mixture to a simmer, stirring frequently.

5. Add Cajun Seasoning: Stir in the Cajun seasoning and adjust the quantity based on your spice preference. Allow the sauce to simmer for about 5 minutes, letting it thicken slightly.

6. Combine Ingredients: Add the sautéed shrimp, crab meat, and Parmesan cheese to the skillet. Gently mix to combine and allow everything to heat through for about 2-3 minutes.

7. Toss with Pasta: Add the cooked pasta to the skillet and toss until the pasta is evenly coated in the creamy sauce.

8. Final Touch: Taste and adjust seasoning if needed. Remove from heat.

9. Garnish: Serve hot, garnishing with freshly chopped parsley and additional Parmesan if desired.