Put the oil in the saucepan and turn the heat to medium. When the oil is shimmering, add one kernel of corn. When it pops, you know the oil is hot enough so add the rest of the popcorn kernels. Cover the pot with a tight fitting lid.
Shake the pot continuously keeping it about an inch above the heat source. Keep shaking it until the rate of popping slows. When it gets down to three or four pops, you know it's almost done and you can remove it from the stove. The residual heat will pop the remaining kernels.
While the popcorn is popping, melt the butter. I prefer melting mine on the stovetop, but you could use the microwave for that if you wish.
Carefully remove the top and stand back so you don't get burned by the escaping steam. Pour the popped corn into a large bowl, preferably with a lid. Pour the melted butter over the popped corn.
Sprinkle the tomato powder, Tuscan seasoning, a little salt, and the parmesan.
Put the top on the bowl and shake like your life depends on it. If you don't have a top, use a spoon and stir so all the popcorn gets coated with the butter and toppings.
Distribute it into smaller bowls for serving. Enjoy!
Notes
To make this vegan, either omit the cheese or use a vegan cheese instead.
Scan for full nutrition info and step-by-step photos.