Recipe inspiration @JoshuaWeissman

Ingredients: Serves 3
1 lb ground beef 80/20
1 yellow onion
1 tsp sugar
1 tsp fresh thyme; optional
3 slices American cheese
3 slices cheddar cheese
9 slices sourdough bread
2 Tbsp butter

Sauce ingredients
2/3 cup mayo
2 Tbsp Dijon mustard
3 Tbsp ketchup
1 Tbsp Worcestershire sauce
1/4 cup grated parmesan cheese
1 Tbsp sweet relish
1/2 tsp garlic powder
1/2 tsp smoked paprika
2 cloves grated garlic
salt & pepper to taste

In a bowl, add all ingredients and whisk until combined. Set aside.

Then shape your beef into 6 even balls. In a frying pan over medium heat, add oil, onions and sugar. Season with salt and cook until caramelized, stirring occasionally, about 15-20 minutes. In a frying pan toast your bread with butter. You can also use a toaster. (I didn’t toast my bread enough)

Heat a cast iron skillet over medium high heat for 3-4 minutes. Then add two beef balls and smash with the back of a spatula wrapped in aluminum foil. Season with salt and pepper, then flip and add cheddar cheese to one and American to the other. Stack you patties and place on a plate.

To assemble, add sauce to the bottom slice of bread, then place the patties and a generous layer of caramelized onions on top. Sauce your other slice of bread and top your sandwich.
Enjoy!

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