Bring a large pot of salted water to a boil.

In a pan, heat the olive oil over medium heat and add minced garlic. Sauté until fragrant, about 1 minute.

Add the heavy cream to the pan and stir well.

Stir in the Parmesan and mozzarella cheese, salt, pepper, and Italian seasoning until the cheese melts.

Drain the cooked pasta and return it to the pot. Pour the creamy sauce over the pasta and mix well.

If using, gently fold in cooked chicken or broccoli.

Pour the pasta mixture into a 9x13 inch baking dish and spread evenly.

Preheat your oven to 350°F (175°C) and bake for 20-30 minutes until the top is golden and bubbly.