Preheat oven to 450 degrees F.
Heat a large 12-inch or bigger oven-safe skillet over medium heat. Add sausage and cook, crumbling into small pieces, until browned, about 3-5 minutes. Add the garlic and crushed red pepper flakes to the pan and cook for 1-2 minutes.
Add the diced tomatoes, tomato sauce, dried basil and oregano. Stir well. Reduce heat and simmer, stirring occasionally, for 5-10 minutes.
Add the water and dry pasta. Bring to a boil, cover, reduce heat to low and cook, stirring occasionally, for 10-15 minutes or until noodles are tender.
Stir in the half and half, and parmesan cheese and season with salt and pepper to taste. Sprinkle mozzarella evenly on top.
Transfer the skillet to the oven and bake until the cheese has melted and browned, about 5 minutes. Enjoy!
