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+ servings

Best Bacon Smash Burger

Prep Time 45 minutes
Cook Time 20 minutes
Total Time 1 hour 5 minutes
Course Appetizer, Breakfast
Cuisine American
Keyword Best Bacon Smash Burger
Servings 6
Best Bacon Smash Burgers with Baconnaise – Crispy Juicy Smash Burger RecipeMeta Description: Make the ultimate bacon smash burger with crispy-edged beef patties, pepper jack cheese, caramelized onions, and a smoky baconnaise sauce. Easy instructions and expert tips.

Ingredients

For the Smash Burgers

  • 2 pounds ground chuck 80/20, formed into six ⅓-lb balls
  • 2 white onions very thinly sliced (mandoline recommended)
  • ½ pound bacon cooked crispy and chopped
  • Salt pepper, and garlic powder, to taste
  • Yellow mustard for cooking
  • 6 –12 slices pepper jack cheese one or two per patty
  • 6 burger buns toasted
  • Avocado oil for high-heat cooking

For the Baconnaise Sauce

  • ½ cup mayonnaise
  • 2 tablespoons ketchup
  • 2 tablespoons yellow mustard
  • 1 tablespoon Worcestershire sauce
  • 1 tablespoon apple cider vinegar
  • 1 tablespoon all-purpose rub
  • 1 tablespoon red pepper flakes
  • ¼ –⅓ cup chopped crispy bacon from above batch

Instructions

Prep the Ingredients

  • Form the ground chuck into ⅓-lb balls and refrigerate for 30 minutes (cold meat creates the best crust).
  • Slice onions very thin using a mandoline. Squeeze out excess water to help them caramelize quickly.
  • Cook bacon until very crispy, chop, and set aside.

Make the Baconnaise

  • In a bowl, combine mayo, ketchup, mustard, Worcestershire sauce, apple cider vinegar, all-purpose rub, and red pepper flakes.

Stir in the chopped bacon.

  • Chill for at least 15 minutes to develop flavor.

Cook the Smash Burgers

  • Preheat a griddle or cast-iron skillet over medium-high heat. Add a drizzle of avocado oil.
  • Place chilled meat balls onto the hot surface. Add a small handful of onions on top of each.
  • Using a burger press or heavy spatula, smash the patties firmly into thin discs.
  • Season with salt, pepper, and garlic.
  • Cook 3–4 minutes until the edges are deeply browned and crispy.
  • Spread a thin layer of mustard on top of each patty. Flip.
  • Add a slice of pepper jack cheese to each patty and cook another 2–3 minutes until melted.

Build the Burgers

  • Toast burger buns directly on the griddle until golden.
  • Spread baconnaise on the bottom buns.
  • Stack two patties onto each bun.
  • Add more baconnaise and top with the toasted bun.

Serve hot.

    Notes

    Use 80/20 ground chuck: The fat content is essential for crispy edges and juicy texture.
    Keep meat cold: Cold beef smashes cleaner and browns better.
    Don’t overcrowd the griddle: Give each patty space for maximum crust formation.
    Toast the buns: Adds structure and prevents sogginess.
    Smash only once: Don’t continue pressing—this releases juices.