Creating Cajun Cream Cheese Chicken Pasta Bake is straightforward. Follow these simple steps to prepare this delicious meal:

1. Preheat your oven to 350°F (175°C).
2. Cook Pasta: In a large pot, boil water and cook the penne pasta according to package directions until al dente. Drain and set aside.
3. Sauté Chicken: In a skillet, heat olive oil over medium heat. Add the diced chicken and cook until golden brown, about 5-7 minutes.
4. Add Seasonings: Stir in the Cajun seasoning, garlic powder, onion powder, salt, and black pepper. Cook for an additional 2 minutes until the chicken is fully coated with spices.
5. Mix Cream Cheese: In the skillet, add the softened cream cheese and chicken broth. Stir until the cream cheese is melted and fully incorporated.
6. Combine Ingredients: Add the cooked pasta and diced tomatoes to the skillet. Mix well until all ingredients are evenly combined.
7. Transfer to Baking Dish: Pour the mixture into a greased baking dish, spreading it evenly.
8. Top with Cheese: Sprinkle shredded cheddar cheese over the pasta mixture, covering it entirely.
9. Bake: Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the cheese is bubbly and golden brown.
10. Garnish: Once baked, remove from the oven and let it sit for a few minutes. Top with chopped green onions before serving.

Following these instructions will lead you to create an incredible dish that will leave everyone craving more.