Ingredients:

  • 1 lb ground beef (80/20 lean-to-fat ratio)
  • 1 tsp kosher salt
  • 1/2 tsp coarse black pepper
  • 1/2 tsp garlic powder
  • 1 tsp Worcestershire sauce
  • 2 large yellow onions, thinly sliced
  • 1 tbsp unsalted butter
  • 1 tbsp water
  • 1 pinch granulated sugar
  • 8 slices thick-cut Rye bread
  • 8 slices Swiss cheese
  • 1/4 cup mayonnaise
  • 2 tbsp softened butter

Instructions:

  1. Season the beef. In a mixing bowl, gently combine the ground beef with kosher salt, black pepper, garlic powder, and Worcestershire sauce. Note: Don't overwork the meat or it will become tough and rubbery.
  2. Form the patties. Divide into 4 equal portions and shape into thin oval patties slightly larger than the bread slices. Note: Beef shrinks as it cooks, so go bigger than the bread initially.
  3. Caramelize the onions. Melt 1 tbsp butter in a cast iron skillet over medium high heat. Add the sliced onions and a pinch of sugar. Cook for 8–10 minutes until onions are mahogany colored and soft.
  4. Deglaze the pan. Add water occasionally to the onions to scrape up the browned bits. Remove onions from the skillet once they are jammy.
  5. Sear the patties. In the same skillet over medium high heat, sear the beef patties for 3-4 minutes per side. Press down with a stiff spatula to create a dark, crispy crust.
  6. Prep the bread. Remove patties and wipe the skillet clean. Spread the interior of each bread slice with softened butter and the exterior with a thin layer of mayo.
  7. Layer the bottom. Place 4 slices of bread (mayo side down) in the skillet over medium heat. Top each with a slice of Swiss cheese.
  8. Add the fillings. Place the beef patty on the cheese, followed by a heap of caramelized onions.
  9. Seal the sandwich. Add the second slice of Swiss cheese and the top bread slice (mayo side up).
  10. Grill to finish. Grill for 3-4 minutes per side until the bread is deeply browned and the cheese is completely molten. How to Make the Ultimate Grill Mozzarella Pizza Grilled Cheese — Craving cheesy goodness? My easy Grill Mozzarella Pizza Grilled Cheese is a m...How to Create a Delicious Grilled BBQ Chicken Cheese Delight — Looking for an easy recipe? My Grilled BBQ Chicken Cheese Delight is a family...Homemade Pimento Cheese Dip the Easy Creamy Sharp Southern Caviar — Homemade Pimento Cheese Dip the is easy peasy Get the classic Southern cheese... $img_2$