1poundGround BeefUse 80/20 lean-to-fat ratio for best flavor and juiciness.
2mediumYellow OnionsSliced thinly and caramelized.
4slicesSwiss CheeseFor creamy melt.
4slicesCheddar CheeseAdds a sharp note.
8slicesHearty BreadSuch as rye or sourdough.
4tablespoonsUnsalted ButterFor cooking and toasting.
to tasteSaltEssential seasoning.
to tastePepperEssential seasoning.
2tablespoonsDijon MustardOptional for added tanginess.
Instructions
Begin by caramelizing the onions. In a large skillet, melt 2 tablespoons of butter over medium heat. Add the sliced onions and a pinch of salt. Stir occasionally, allowing the onions to cook down for about 20-25 minutes until they are soft and golden brown.
While the onions are caramelizing, prepare the beef patties. In a mixing bowl, season the ground beef with salt and pepper. Divide the mixture into four equal portions and shape them into patties, about ¾ inch thick.
Once the onions are caramelized, remove them from the skillet and set aside. In the same skillet, melt another tablespoon of butter over medium-high heat. Add the beef patties, cooking them for about 4-5 minutes on each side for medium doneness.
During the last minute of cooking, place a slice of Swiss cheese on each patty and cover the skillet with a lid to allow the cheese to melt.
While the patties are finishing, prepare the bread. In a separate pan, melt the remaining butter over medium heat. Toast four slices of bread until golden brown.
Assemble the sandwich by placing one cheese-topped patty on a slice of toasted bread. Add a generous spoonful of caramelized onions on top, then place another patty on top of the onions, followed by another slice of cheese. Top with a second slice of toasted bread.
Repeat the assembly process for the second sandwich. Once both sandwiches are assembled, return them to the skillet over medium heat. Cook for about 2-3 minutes on each side until the bread is golden brown and crispy.
Remove the sandwiches from the skillet and let them rest for a minute before slicing them in half.
Serve your Classic Double Decker French Onion Patty Melt warm, and enjoy!
Notes
For variations, consider adding jalapeños for spice, using ground turkey for a lighter option, or experimenting with different cheeses.