My Favorite Burger: Whataburger Mushroom Swiss

We all have our favorite burgers. This is mine. We've played around with the recipe and I think we've gotten close. The results were phenomenal and we will definitely add these to our meal rotation.
Very simple and not a lot of ingredients needed. Try it and let us know what you think.
#mushroomburger
#whataburger
#grillingburgers