Cook the Pasta: Bring a large pot of salted water to a rolling boil. Add the penne pasta and cook according to the package instructions until al dente, usually around 10-12 minutes. Once cooked, drain the pasta in a colander and set aside, reserving a cup of pasta water if needed later.
Sauté the Sausage: In a large skillet, heat the olive oil over medium heat. Add the sliced sausage and sauté for about 5 minutes or until browned and crispy. Remove the sausage pieces from the skillet and set them aside on a plate, leaving the drippings in the pan for added flavor.
Prepare the Vegetables: In the same skillet, add the diced onion, red bell pepper, and green bell pepper. Sauté the mixture for about 5-7 minutes, or until the vegetables are tender and slightly caramelized. Add the minced garlic and cook for an additional minute, stirring constantly until fragrant.
Create the Sauce: Pour the chicken broth into the skillet and bring it to a gentle simmer. Stir in the heavy cream along with the Cajun seasoning and smoked paprika. Allow the sauce to simmer for about 3-5 minutes, stirring occasionally until it begins to thicken and become creamy.
Combine: Return the browned sausage to the skillet, mixing it well with the sauce. Then, add the cooked penne pasta to the skillet, tossing everything together until the pasta is evenly coated in the creamy sauce. If the sauce is too thick, add a splash of the reserved pasta water to reach your desired consistency. Season with salt and pepper to taste.
Add Cheese: Sprinkle the grated Parmesan cheese over the pasta and stir until it melts into the sauce, creating a luscious and creamy texture. Remove the skillet from the heat.
Notes
Serve in shallow bowls and garnish with extra Parmesan and parsley.