Smash Burgers with Rich Baconnaise Sauce and Crunchy Onions

Ingredients

• Lightly brush griddle with avocado oil before cooking
• Season to taste with garlic powder, salt, and black pepper
• 900 g ground chuck (go for 80/20), divided into six balls around 150 g each
• Splash of mustard for searing
• Toasted burger buns
• Pepper jack cheese slices
• 225 g bacon, cook until crunchy then chop up
• 2 white onions, slice super thin with a mandoline
• 1 tablespoon apple cider vinegar
• 2 tablespoons mustard
• 120 ml mayo
• 1 tablespoon red pepper flakes
• 2 tablespoons ketchup
• 1 tablespoon all-purpose rub (mix of salt, pepper, garlic powder)
• 225 g bacon, cooked crisp and chopped
• 1 tablespoon Worcestershire sauce