Preheat the oven to 400°F.
Take a stockpot, add the 5 cups of water, and then boil.
Add the spinach, cover, and cook it for 1 minute, or until it gets wilted.
Drain it well.
Take a small skillet heat the oil and butter on medium heat low.
Add the Italian seasoning, garlic, and salt.
Stir and cook it until the garlic gets tender for 1 to 2 minutes.
Spread the spinach in the greased 8-inch baking dish.
Drizzle it with the mixture of butter, sprinkle it with cheese.
Bake and uncover it until the cheese gets browned lightly for just 10 to 15 minutes.
Serve it and enjoy.