01 - Combine ground beef, salt, pepper, and Worcestershire sauce in a mixing bowl. Gently mix until just incorporated and form into 4 equal patties, approximately ¾ inch thick. Make a slight indentation in the center of each patty to prevent puffing during cooking.
02 - Preheat grill or skillet over medium-high heat. Cook beef bacon slices for 3–4 minutes per side until crispy and rendered. Transfer to paper towels to drain excess fat.
03 - Place patties on the preheated grill or skillet. Cook for 3–4 minutes per side for medium doneness. During the final minute of cooking, place a cheddar slice on each patty and cover to melt the cheese.
04 - Lightly butter the cut sides of brioche buns if desired. Place cut side down on the grill or in a dry skillet until golden brown and warmed through, approximately 1–2 minutes.
05 - Spread mayonnaise on the bottom bun followed by Dijon mustard. Layer with romaine lettuce, tomato slices, cheese-topped patty, avocado slices, crispy beef bacon, and red onion. Add pickles and ketchup if using. Finish with the top bun.
06 - Serve immediately while burgers are hot and buns remain toasted. Pair with sweet potato fries, coleslaw, or a crisp lager.