Cook spaghetti according to package instructions until al dente. Drain and set aside.
In a large skillet, heat olive oil over medium heat. Add the sliced sausage and cook until slightly browned.
Add the onion, bell pepper, and garlic to the skillet. Cook until the vegetables are soft, about 5 minutes.
Stir in the diced tomatoes (with their juice) and Cajun seasoning. Bring to a simmer and cook for about 10 minutes, allowing the flavors to meld together.
Add the cooked spaghetti to the skillet, tossing to coat the pasta evenly with the sauce. Cook for an additional 2 minutes, or until everything is heated through.
Taste and adjust seasoning with salt, pepper, and more Cajun seasoning if needed.
Garnish with chopped parsley or green onions before serving.
Notes
Cook the pasta al dente to keep a good texture after mixing it with the sauce.
• Let the Cajun seasoning cook with the sausage and vegetables to release its full flavor.
• Use a large pan to avoid overcrowding and ensure even cooking.
• Taste and adjust the seasoning, as Cajun spice levels can vary.
• Garnish with fresh herbs like parsley or green onions for a pop of color and freshness.