Buttered-toast Swiss Patty Burger

Total Time: 40 mins Preparation Time: 30 mins Cook Time: 10 mins

Ingredients

• Servings: 4
• 3 tablespoons butter (2 of them soft)
• 1 large onion, chopped
• ground thyme, 2 pinches
• kosher salt
• pepper
• 1 1/2 lbs ground chuck
• 1 tablespoon worcestershire sauce
• 1 1/2 teaspoons extra-virgin olive oil
• 4 thin slices swiss cheese
• 8 slices sandwich bread
• 1 tablespoon dijon mustard
• chicken stock or water
• 1 tablespoon finely chopped flat leaf parsley

Recipe

• 1 melt 1 tablespoon butter in a medium skillet over med-low heat.
• 2 add the onion and thyme, season with salt and pepper, and cook until the onion is lightly browned, about 15 minutes.
• 3 while the onion is cooking, combine the beef and worcestershire sauce in a large bowl; season with salt and pepper and mix thoroughly.
• 4 score the mixture into 4 equal portions and form them into patties slightly thinner at the center than at the edges for even cooking and to ensure a flat surface.
• 5 heat the oil in a large nonstick skillet over med-high heat until very hot.
• 6 cook the burgers, turning once, 10 minutes for medium.
• 7 top the burgers with the cheese for the last minute of cooking, tenting the skillet with foil, if you like, to help the cheese melt.
• 8 while the burgers are cooking, toast the bread, then spread with the remaining 2 tablespoons softened butter.
• 9 stir the mustard and a splash of chicken stock into the onions.
• 10 stir in the parsley, then remove from the heat.
• 11 place a burger on each of 4 buttered toasts and top with some onions.
• 12 set the remaining buttered toast on top.