Cook tater tots according to package directions. Meanwhile, heat oil over medium heat. Add onions and cook, 3-4 minutes, until onions soften. Increase heat to medium-high and add ground beef, garlic powder, and yellow mustard. Season with Kosher salt and cook, breaking beef into bite-size pieces until beef is browned and just cooked through.
Preheat oven to 375°F. Top cooked tater tots with cooked hamburger meat, American cheese, and bacon. Cook until cheese is melted through. Remove from oven and top with shredded lettuce and special sauce and chopped parsley, if desired.
for the Special Sauce
Combine all ingredients in a small mixing bowl and season with Kosher salt. Let flavors meld at least 1 hour before using.
*shredded American Cheese? I know… it’s easy. Just go to your deli counter and ask them for the thickest slices possible. Then get grating!