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Perfect Fathers Day A5 Wagyu Burger Recipe with Truffle Aioli and Caramelised Onions

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A luxurious yet simple burger featuring melt-in-your-mouth A5 Wagyu beef, earthy truffle aioli, and sweet caramelised onions, perfect for Father’s Day or any special occasion.

Ingredients

Scale
  • 1 pound (450g) A5 Wagyu beef, freshly ground or formed into patties
  • 4 brioche burger buns
  • 2 large yellow onions, thinly sliced
  • 1/2 cup (120ml) mayonnaise
  • 1 tablespoon truffle oil
  • 1 teaspoon lemon juice
  • 1 small garlic clove, minced
  • Optional: 4 slices aged cheddar or Gruyère cheese
  • Butter, unsalted and softened, for toasting buns
  • Salt and freshly cracked black pepper
  • A few leaves of butter lettuce or baby arugula

Instructions

  1. Prepare the caramelised onions: Heat 1 tablespoon of oil or butter in a pan over low heat. Add thinly sliced onions with a pinch of salt. Cook, stirring occasionally, for about 30-40 minutes until deeply golden and sweet. Add a splash of water if onions start to dry out.
  2. Make the truffle aioli: In a small bowl, mix 1/2 cup mayonnaise, 1 tablespoon truffle oil, minced garlic, and lemon juice. Taste and adjust truffle oil or lemon juice as needed. Cover and chill until ready to serve.
  3. Form the patties: Divide the A5 Wagyu beef into 4 equal portions (about 4 oz / 115 g each). Form gently into patties about 3/4 inch (2 cm) thick, making a slight indent in the center with your thumb to prevent puffing during cooking.
  4. Season the patties: Just before cooking, season both sides with flaky sea salt and freshly cracked black pepper.
  5. Toast the buns: Spread softened butter on the cut side of brioche buns. Toast on the grill or skillet over medium heat until golden and slightly crisp, about 1-2 minutes. Set aside.
  6. Cook the patties: Place patties on a hot grill or skillet. Cook for about 3-4 minutes per side for medium-rare (internal temperature around 130°F / 54°C). Avoid pressing down on the patties. If adding cheese, place a slice on each patty during the last minute of cooking to melt.
  7. Assemble the burgers: Spread a generous layer of truffle aioli on the bottom bun. Add the cooked patty, followed by a spoonful of caramelised onions and a few leaves of butter lettuce or arugula. Top with the other half of the bun.
  8. Serve immediately with preferred sides.

Notes

Let patties rest for a couple of minutes after cooking to lock in juices. Caramelised onions and truffle aioli can be made ahead to save time. Use low and slow heat for onions to avoid burning. Adjust truffle oil carefully as it is potent. Avoid pressing patties while cooking to keep them juicy.

Nutrition

Keywords: A5 Wagyu burger, truffle aioli, caramelised onions, Father's Day burger, gourmet burger, brioche bun, caramelized onions, luxury burger

Find it online: https://milaspoon.com/perfect-fathers-day-a5-wagyu-burger-recipe-with-truffle-aioli-and-caramelised-onions/