Steps
1. In a bowl, mix the ground beef, truffle oil, salt, and pepper until well combined. Form into a patty.
2. Heat a pan over medium-high heat and cook the patty to your desired doneness.
3. Toast the brioche bun in the pan or toaster.
4. Assemble the burger by placing the cheddar cheese on the bottom bun, followed by the cooked patty, crispy bacon, arugula, tomatoes, red onions, and a generous spread of truffle aioli.
5. Top with the other half of the bun and serve hot.