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  • 1 pound 85% lean ground beef
  • 1 large egg, lightly beaten
  • 1 medium yellow onion, 1/2 grated and 1/2 thinly sliced
  • 1/2 teaspoon garlic powder
  • 1 teaspoon kosher salt
  • 1 teaspoon freshly ground black pepper
  • 2 tablespoons unsalted butter, softened
  • 12 slices white bread
  • 12 slices American cheese (optional)
For Toppings (any or all)
  • Mustard of your choice
  • Ketchup
  • Sliced tomatoes
  • Pickles


To make the burgers, combine the beef, egg, grated onion, garlic powder, salt and pepper in a medium bowl. Mix until combined then form into 6 thin patties.
Spread the butter on one side of each slice of bread. Heat a large, heavy-duty skillet or griddle over medium-high heat. Cook the burgers about 3 minutes on each side. Drain on paper towels. Drain the grease from the skillet.
In the same skillet, place 6 slices of bread, butter-side down. Top each with a slice of cheese (if using), some sliced onions and a burger. Top with the remaining cheese (if using) and bread, butter-side up. Cook the sandwiches until golden brown, about 2 minutes per side.

Serve with mustard, ketchup, tomatoes, pickles or any other desired hamburger toppings.

Katie’s Short Order Cook Swap Outs: 

Wheat bread for white
Ground turkey for beef
Cheddar or Gruyere cheese for American|

Add bacon as a topping
Mayo or Thousand Island Dressing for, or in addition to, ketchup