Bring a large pot of lightly salted water to a boil. Add pasta and cook, stirring occasionally, until tender yet firm to the bite, about 10 minutes depending on shape and package directions; drain and set aside.

While pasta is cooking, sauté sausage in a large skillet over medium-high heat for 5 minutes, turning occasionally.

Add cream and Cajun seasoning; bring to a boil. Reduce heat and simmer gently until mixture begins to thicken, 3 to 4 minutes. Remove from heat and stir in Parmesan cheese.