Creating Southwest Alfredo Penne Pasta is simple when you follow these clear steps:

1. Cook Pasta: In a large pot, bring salted water to a boil. Add penne pasta and cook according to package instructions until al dente. Drain and set aside.
2. Melt Butter: In the same pot, melt butter over medium heat. Add minced garlic and sauté for 1-2 minutes until fragrant.
3. Add Cream: Pour in the heavy cream, stirring continuously. Allow the mixture to simmer for about 5 minutes.
4. Incorporate Cheese: Gradually add grated Parmesan cheese, mixing until melted and smooth.
5. Season: Add chili powder, smoked paprika, cumin, salt, and pepper. Stir well to combine the seasonings into the sauce.
6. Mix in Vegetables: Add corn and diced red bell pepper to the sauce, stirring until they are heated through.
7. Combine Pasta: Add the cooked penne pasta to the sauce. If using, stir in the diced chicken and mix until everything is well-coated.
8. Serve: Remove from heat, garnish with fresh cilantro, and check for seasoning before serving.

These simple steps will guide you in making this incredible pasta dish while ensuring maximum flavor in every bite.