Preheat an oven to 350 degrees and line a large sheet tray with parchment paper. Spread out 12 TB of shredded parmesan into 12 circles on the sheet tray, making sure none of the cheese is clumped together.
Bake the parmesan circles in the oven for 6-7 minutes until the circles are completely melted, bubbly, and only the edges are turning golden brown. Keep an eye on your oven during this process to avoid over cooking.
Let the parmesan circles cool for 30-60 seconds. However, as soon as they are cool enough for you to touch, continue with this step immediately. Pick up each circle and press them into a full-sized 12-ct. muffin tin. The circle will harden into a little cup that serves as your “wonton wrapper”.
Set the parmesan cups aside to cool. Create the crab rangoon filling by finely dicing imitation crab and tossing it in a pan with the soy sauce, worcestershire, garlic powder, and sesame seeds on a low heat. Cook through just until the crab is coated in the liquids and spices and it becomes warm.
Toss the cream cheese into the pan. Cook and stir over low-medium heat until you have a warm, gooey, crab rangoon filling. The cream cheese will want to seize if it becomes too hot or too cold, so adjust your heat as necessary.
Remove the cheese cups from your muffin tins. Fill each parmesan cup with a dollop of crab rangoon filling. Sprinkle the chopped green onion over your crab rangoons and enjoy warm!