To make your Creamy Kale and Pasta Bake, follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Cook Pasta: In a large pot, cook the pasta according to package instructions until al dente. Drain and set aside.
3. Sauté Vegetables: In a large skillet, heat olive oil over medium heat. Add the chopped onion and garlic, sautéing until the onion is translucent.
4. Add Kale: Stir in the chopped kale and cook until wilted, about 5 minutes.
5. Make Sauce: Pour in the heavy cream and broth, stirring to combine. Add salt, pepper, garlic powder, and red pepper flakes if using. Allow the sauce to simmer for 5 minutes.
6. Combine Pasta and Sauce: Add the cooked pasta to the skillet, stirring well to coat the pasta evenly with the creamy sauce.
7. Add Cheese: Stir in the grated Parmesan cheese, mixing until melted and combined.
8. Transfer to Baking Dish: Pour the pasta mixture into a greased 9×13 inch baking dish. Top with shredded mozzarella cheese.
9. Bake: Place the dish in the preheated oven and bake for 20 minutes, or until the cheese is bubbly and golden.
10. Garnish: Once out of the oven, let it cool for a few minutes. Garnish with fresh parsley before serving.

These steps will guide you in creating this incredible Creamy Kale and Pasta Bake effortlessly.