Step 1

Cook spaghetti according to package instructions until al dente. Drain and set aside.

Step 2

In a large skillet, heat olive oil over medium heat. Add the sliced sausage and cook until slightly browned.

Step 3

Add the onion, bell pepper, and garlic to the skillet. Cook until the vegetables are soft, about 5 minutes.

Step 4

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.

Step 5

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.

Step 6

Taste and adjust seasoning with salt, pepper, and more Cajun seasoning if needed.

Step 7

Garnish with chopped parsley or green onions before serving.