Ingredients
- 2 pounds (900 grams) of ground beef, preferably sirloin or round
- 1 package dry onion soup mix
- 1 tablespoon (15 milliliters) Worcestershire sauce
- 1 tablespoon (15 milliliters) ketchup, or tomato paste
- 1 teaspoon (5 milliliters) sea salt
- 6 hamburger buns
- 6 slices swiss cheese
For the Topping:
- 1/2 cup (120 milliliters) mayonnaise
- 1 1/2 tablespoons (22 1/2 milliliters) steak sauce
Steps to Make It
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Gather the ingredients.
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Combine ground beef with soup mix, Worcestershire sauce, ketchup (or tomato sauce), and salt.
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Form into six equal-sized patties.
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Preheat the grill for medium-high heat.
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Place patties onto grill and cook for 6 to 7 minutes per side (or until internal temperature reaches a safe 165 F). During the last minute or two of cook time, place one slice of Swiss cheese on each patty.
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Once the cheese has melted and patties are cooked through, remove from heat and place onto a cookie sheet or platter. Cover with aluminum foil.
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To prepare burger topping, simply combine mayonnaise and steak sauce until mixed through. Store in an airtight container in the refrigerator for up to two days after preparation.
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Assemble hamburgers and top off with mayonnaise mixture.
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Serve immediately.