Fill a large pot with salted water and bring it to a rolling boil. Cook your pasta until it is al dente, then drain and rinse with cold water immediately.

Place the ground beef in a hot skillet over medium heat. Break it into small crumbles and cook until it is no longer pink and looks nicely browned.

Add half of your diced onions to the beef while it is still in the pan. Sauté them for two minutes until they become soft, fragrant, and slightly translucent.

Tilt the skillet and carefully drain away any excess fat or oil from the meat. This keeps your salad light and prevents the dressing from becoming too greasy.

In a small bowl, combine the mayonnaise, mustard, relish, vinegar, and spices. Whisk everything together until the sauce is smooth, creamy, and looks like that famous burger dressing.

Let the cooked beef and onion mixture cool down completely before adding it to the salad. This prevents the fresh lettuce from wilting and the cheese from melting too much.

In your largest salad bowl, toss the cold pasta together with the cooled ground beef. Add the shredded cheddar cheese, chopped pickles, tomatoes, and the remaining raw onions.

Pour your homemade secret sauce over the pasta and meat mixture. Use your salad tongs to gently toss everything until every piece is coated in the creamy dressing.

Just before you are ready to serve, gently fold in the shredded iceberg lettuce. Adding it at the end ensures the salad stays crunchy and fresh for your guests.

Sprinkle the toasted sesame seeds over the top to get that "burger bun" look. Serve the salad immediately or chill it in the fridge for an hour for better flavor.