Gourmet Burger Ideas Brie Caramelized Onion Bliss

Ingredients

• 2 large yellow onions, thinly sliced (approximately 500g)
• 2 tablespoons olive oil (30 ml)
• 1 tablespoon brown sugar (12g)
• 1/4 teaspoon salt (1.5g)
• 1/4 teaspoon freshly ground black pepper (0.5g)
• 1 tablespoon balsamic vinegar (15 ml)
• 1.5 lbs (680g) ground beef (80/20 blend recommended)
• 1 teaspoon kosher salt (5g)
• 1/2 teaspoon freshly ground black pepper (1g)
• 1 tablespoon Worcestershire sauce (15 ml)
• 4 brioche burger buns, toasted lightly
• 8 oz (225g) brie cheese, rind removed, sliced
• 1/4 cup Balsamic glaze (60ml)
• Arugula or other greens for garnish (optional)