Put the oil in a large pot and add the popcorn kernels. Cover the pot with a tight-fitting lid and heat over medium heat. Once the popping starts, shake the pot occasionally until the popping subsides. Transfer the popcorn to 2 large bowls, divide the melted butter between them and toss to coat.
For the Parmesan herb popcorn: Combine the Parmesan, Italian seasoning, red pepper flakes and a sprinkle of seasoned salt in a small bowl. Sprinkle on top of 1 of the bowls of buttered popcorn and toss to coat. Makes: 15 cups
For the cinnamon sugar popcorn: Combine the sugar, cinnamon and salt in a small bowl. Sprinkle over the second bowl of buttered popcorn and toss to coat. Drizzle over the caramel syrup. Makes: 15 cups