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Smash Burgers With Baconnaise Sauce

These juicy smash burgers are topped with caramelized onions, melted pepper jack cheese, and a smoky homemade baconnaise sauce perfect for game day snacking.
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Ingredients
  

For the Patties:

  • 2 pounds ground chuck 80/20, formed into six 1/3-pound balls
  • Kosher salt coarse black pepper, and granulated garlic (for seasoning)

For the Onions:

  • 2 white onions thinly sliced

For the Bacon:

  • ½ pound bacon cooked until crispy and chopped

For the Cheese:

  • Pepper jack cheese sliced

For the Buns:

  • 6 burger buns toasted

For the Condiments:

  • Yellow mustard

For the Baconnaise Sauce:

  • ½ cup mayonnaise
  • 2 tbsp ketchup
  • 2 tbsp yellow mustard
  • ½ pound crispy chopped bacon
  • 1 tbsp Worcestershire sauce
  • 1 tbsp apple cider vinegar
  • 1 tbsp all-purpose rub salt, pepper, garlic blend
  • 1 tbsp red pepper flakes

Instructions
 

  • Chill the Patties: Form 6 loose 1/3-pound beef balls and chill for 30 minutes.
  • Prep the Onions: Thinly slice and squeeze out moisture. Chill until ready.
  • Cook Bacon: Fry until crisp, chop, and divide half for sauce, half for topping.
  • Make Baconnaise: Mix mayo, ketchup, mustard, vinegar, Worcestershire, BBQ rub, red pepper flakes, and half the bacon. Chill.
  • Smash the Burgers: Heat griddle, add beef balls and onions, smash flat. Season well.
  • Flip & Add Cheese: Spread mustard on top, flip, top with cheese, and cook until melted.
  • Toast & Assemble: Toast buns, layer with baconnaise, patties, remaining bacon, and top bun.