Smash Burgers with Baconnaise (Printable Recipe)

Crispy-edged beef patties with melty cheese and bacon-infused mayo sauce create the ultimate burger experience.

# Ingredients You'll Need:

→ For the Burgers

01 - 2 pounds ground chuck (80/20 fat ratio), formed into 1/3 pound balls
02 - 2 white onions, sliced paper-thin with a mandoline
03 - Salt, freshly ground black pepper, and garlic powder for seasoning
04 - Yellow mustard for cooking
05 - 8 slices pepper jack cheese
06 - 4 burger buns, split
07 - 2-3 tablespoons avocado oil for cooking

→ For the Baconnaise Sauce

08 - 1/2 pound bacon, cooked until extra crispy and finely chopped
09 - 1/2 cup real mayonnaise, full-fat
10 - 2 tablespoons ketchup
11 - 2 tablespoons mustard (Dijon or yellow)
12 - 1 tablespoon Worcestershire sauce
13 - 1 tablespoon apple cider vinegar
14 - 1 tablespoon all-purpose rub (mix of salt, pepper, and garlic powder)
15 - 1 tablespoon red pepper flakes (adjust to taste)

# Steps to Follow:

01 - Divide ground chuck into 1/3 pound balls, gently forming them without overworking. Refrigerate for 30 minutes to ensure they hold together during cooking.
02 - Slice onions paper-thin using a mandoline and remove excess moisture by squeezing them. Refrigerate until needed.
03 - In a skillet over medium heat, cook the bacon until extra crispy (10-15 minutes). Drain on paper towels and chop finely. Set aside half for the sauce and half for the burgers.
04 - Mix mayonnaise, ketchup, mustard, half the crispy bacon, Worcestershire sauce, apple cider vinegar, all-purpose rub, and red pepper flakes in a bowl. Refrigerate to meld flavors.
05 - Heat a griddle or cast-iron skillet over medium-high heat. Drizzle avocado oil and spread evenly.
06 - Place chilled meat balls on the hot surface, leaving 2-3 inches between each. Top each with a handful of onions, then smash into 1/4 inch thick patties using a heavy press. Season with salt, black pepper, and garlic powder. Cook for 3-4 minutes until crispy at the edges.
07 - Spread mustard on the uncooked side of each patty. Flip them mustard-side down, then top each with pepper jack cheese to melt. Cook the second side until done.
08 - Place split burger buns cut-side down on the griddle and toast until golden brown (30-60 seconds).
09 - Spread baconnaise sauce on the bottom bun, stack two patties, add more sauce, sprinkle the reserved bacon on top, and crown with the top bun. Serve immediately.

# Extra Tips:

01 - Smash burgers derive their flavor from searing thin patties on a hot surface, creating a caramelized crust.
02 - Adding mustard before flipping adds tanginess and enhances browning.
03 - The baconnaise sauce doubles as a delicious dip for fries or a sandwich spread.