The peppercorn seasoning on this Whopper is next level! Flame-grilled beef with crispy bacon, fresh lettuce, tomato, and bold peppercorn mayo that adds serious kick.
Preheat your gas grill (or cast iron grill pan) to high heat, aiming for 500°F. This is essential to replicate Burger King's signature flame-grilled char marks and smoky flavor.
Form 4 oz of 80/20 ground beef into a patty about 1/2-inch thick. Season both sides generously with kosher salt and 2 tsp coarse cracked black pepper.
Grill the beef patty over direct heat for 3-4 minutes per side for medium doneness. Resist pressing with your spatula. Sear until deeply charred; this step crucially mimics BK's flame broiler method.
At the same time, lay 3 bacon strips in a cold skillet. Cook over medium heat until crispy, flipping once. Drain bacon on paper towels.
Mix 1.5 tbsp mayonnaise with 1 tsp freshly ground peppercorn blend and 0.25 tsp garlic powder for the peppercorn mayo. Set aside.
Slice the sesame seed bun and toast cut sides directly on the grill (or a hot, dry pan) for 1-2 minutes, just until golden with visible grill marks. This keeps the bun from getting soggy.
Assemble: Bottom bun (toasted side up), spread peppercorn mayo, slice of cheese, grilled beef patty, bacon strips, lettuce leaves, tomato slices, onion rings, an extra sprinkle of cracked pepper, then top bun (toasted side down). Serve immediately.