Cook the pasta according to package instructions until al dente.
In a large bowl, mix the cooked pasta, diced tomatoes, spinach, olive oil, garlic powder, salt, and pepper.
Transfer the mixture to a baking dish and sprinkle mozzarella and parmesan cheese on top.
Bake for 20 minutes or until the cheese is bubbly and golden.
Serve
Dig in straight from the baking dish, and enjoy the cheesy goodness!