Step 1: Preheat and Prep

• Preheat your oven to 375°F (190°C).

• Lightly grease a large baking dish and set aside.

Step 2: Cook the Pasta

• Bring a large pot of salted water to a boil.

• Cook the penne pasta according to package directions until al dente.

• Drain and set aside.

Step 3: Cook the Chicken

• In a large skillet, heat the olive oil over medium-high heat.

• Add the chicken pieces, season with salt and pepper, and cook for 5–7 minutes, until golden and cooked through.

• Add the minced garlic and sauté for about 1 minute until fragrant.

Step 4: Create the Creamy Sauce

• Stir in the heavy cream and Italian seasoning.

• Let the sauce simmer gently for 2–3 minutes to thicken slightly.

Step 5: Combine and Layer

• Add the marinara sauce, cooked pasta, and spinach to the skillet.

• Toss everything together until well combined and the spinach wilts slightly.

• Transfer the mixture to the prepared baking dish.

Step 6: Top and Bake

• Sprinkle mozzarella and Parmesan cheese evenly over the top.

• Bake uncovered for 20–25 minutes, or until the cheese is melted, bubbly, and golden.

Step 7: Serve

• Let the pasta bake cool for a few minutes.

• Garnish with fresh basil if desired before serving.