Cajun Sausage Alfredo My Easy Spicy New Orleans Pasta

Ingredients

• 1 pound (450g) Cajun sausage, such as andouille, sliced into 1/4-inch rounds.
• 1 tablespoon (15ml) olive oil
• 1 medium yellow onion, chopped (approx. 1 cup)
• 2 cloves garlic, minced
• 1 red bell pepper, cored, seeded, and chopped (approx. 1 cup)
• 1 teaspoon Cajun seasoning (store-bought or homemade)
• 1/2 cup (113g) unsalted butter
• 2 cups (475ml) heavy cream
• 1 cup (113g) freshly grated Parmesan cheese, plus more for serving
• 1/4 teaspoon ground nutmeg
• Salt and freshly ground black pepper to taste
• 2 Tablespoons chopped fresh parsley, for garnish
• 1 pound (450g) fettuccine pasta