Step 1: Prepare Ingredients

1. In a large mixing bowl, combine the ground beef, breadcrumbs, eggs, garlic powder, onion powder, paprika, Worcestershire sauce, salt, and pepper.
2. If desired, add grated onion and chopped parsley for extra moisture and flavor. Gently mix until combined but avoid overworking the meat.

Step 2: Shape the Patties

1. Divide the mixture into 6 equal portions (about 5-6 ounces each).
2. Roll each portion into a ball, then flatten into a round patty about ¾-inch thick.
3. Press a small indent in the center of each patty to prevent puffing during cooking.

Step 3: Cook the Patties

1. For Grilling: Preheat the grill to medium-high. Spray with non-stick spray and grill patties for 4-5 minutes per side for medium doneness.
2. For Pan-Searing: Heat olive oil in a skillet over medium-high heat. Cook each patty for 3-4 minutes per side until browned.
3. For Air Frying: Preheat the air fryer to 375°F (190°C). Cook patties for 10-12 minutes, flipping halfway.

Step 4: Assemble and Serve

1. Toast brioche buns lightly on the grill or in a skillet.
2. Layer with lettuce, tomato, sliced onion, and cheese. Add condiments of choice.
3. Serve hot with sides like fries, salad, or sweet potato mash.