
Try making this delicious cheese sauce as a tasty add-on to your burgers. Create this mouth-watering dish using some of your favorite cheeses and top it off with delicious grilled onions.
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Try making this delicious cheese sauce as a tasty add-on to your burgers. Create this mouth-watering dish using some of your favorite cheeses and top it off with delicious grilled onions.
Get more recipes from The Dish on Oz.
Watch The Video
Preheat the grill.
Prepare the onions: When the grill is hot, toss the onions slices with 2 tbsp. softened butter and a generous pinch of salt. Place them on a medium to low-heat part of the grill to char slowly. When the onions are tender, 12-15 minutes, remove them from the grill and toss them with the red wine vinegar. Set aside.
Make the cheese sauce: In a medium saucepan, combine the garlic, milk, cream, mustard, gruyere, and Parmesan with a generous pinch of salt and the paprika. Stir to blend. Warm over low heat, whisking, until the cheese melts and the sauce become smooth (8-10 minutes). Stir in a splash of Worcestershire and a splash of hot sauce. Taste for seasoning.
Make the hamburgers: In a medium bowl, break up the meat and spread it up on the sides so that the seasoning really permeates the meat. Season generously with salt and add 1 tbsp. Worcestershire. Mix with your hands to make sure all of the flavors get integrated. Form the meat into four even patties that are about 3/4-inch thick. Take care not to overwork the meat here. It can toughen the texture of your burger!
Cook and assemble the burgers: Place the hamburgers on the hottest part of the grill and cook, undisturbed, for about 3-4 minutes. Turn them a quarter turn and cook for 2 more minutes. Use a metal spatula to flip them on their second side and cook for an additional 2-3 minutes for rare to medium-rare. Toast the bun halves on the coolest part of the grill. Place a hamburger on the bottom bun and top with grilled onions and Serrano chili slices. Pour some of the cheese sauce over the meat. Top with a bun and devour!