Cajun spaghetti with andouille sausage, peppers, and mushrooms is a creamy pasta recipe made with simple ingredients. This Cajun spaghetti sauce is a crowd-pleaser!
Cook spaghetti according to package directions and drain. Slice andouille sausage into ¼ inch coins and brown in a large skillet on medium heat for 8 minutes, stirring occasionally to ensure all sides get browned. Set aside.
Melt butter in a medium-sized saucepot. Sauté bell peppers, mushrooms, and shallots on medium heat for 3-4 minutes until softened. Then add garlic and Cajun seasoning and cook an additional 1 minute.
Add flour to the saucepot in 1 tablespoon increments, stirring in between each tablespoon. Once all the flour is incorporated, cook for 1 minute. Then, slowly pour in chicken broth while stirring continuously so the flour doesn't clump.
Pour heavy cream into the saucepot 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.