Wagyu Beef Burger with Caramelized Onions

Method

1. In a skillet, melt butter and add sliced onions. Cook over medium heat, stirring occasionally, until caramelized (about 15 minutes). Add brown sugar and continue cooking for 5 more minutes.
2. Season wagyu beef with salt and pepper. Cook on a grill or skillet until desired doneness. Let rest 5 minutes.
3. Toast brioche buns. Assemble burgers with a patty, cheese, caramelized onions, lettuce, tomato, ketchup, and mustard.
4. Serve immediately with a side of fries or coleslaw.
5. Optional: Add bacon or avocado for extra richness.
6. For whole cuts, check a minimum internal temperature of 63°C (145°F), then rest for at least 3 minutes before serving.