Cajun spaghetti with andouille sausage is a creamy pasta recipe made with smoky sausage, sautéed peppers and mushrooms, and a homemade Cajun spaghetti sauce. Ready in about 30 minutes, it’s an easy, comforting dinner that brings bold Cajun flavor to classic spaghetti night.
Cook spaghetti in a large pot according to the package directions. Drain and set aside.
While the spaghetti is cooking, brown andouille sausage in a large skillet on medium heat for 8 minutes. Stir occasionally to ensure all sides get browned. Remove from the skillet and set aside.
In the same skillet, melt butter over medium heat. Sauté bell peppers, mushrooms, and shallots for 3-4 minutes until softened. Then add garlic and Cajun seasoning and cook an additional 1 minute.
Add flour to the skillet in 1 tablespoon increments, stirring in between each tablespoon. Once all the flour is incorporated, cook for 1 minute.
Slowly pour in chicken broth while stirring continuously so the flour doesn't clump. Pour in heavy cream and bring to a boil for 1 minute.
Lower the heat to a simmer. Stir in freshly grated parmesan cheese and simmer for 10-15 minutes until sauce has slightly reduced and thickened.
Add cooked andouille sausage to the sauce and heat through. Toss sauce with spaghetti and serve immediately.
Notes
Use fresh parmesan for the best taste and consistency.
I don't add salt to this recipe because the store-bought Cajun seasoning I use has enough sodium, but feel free to add salt and pepper to taste.
If the sauce isn't thickening, you may need to let it simmer an extra 5-10 minutes. The sauce will thicken upon standing.