Burgers are cheap! You can easily find a place that has something meat-adjacent with too much bun and certified cheesonium topping for less than $30. Don't just try it once, start a layaway plan now so you can enjoy that three times a year!
https://www.eatfaceplant.com/menu
They even have a working shake machine.
A vegan sandwich would be right.
Do you also call a caesar salad a salad cheeseburger?