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Crispy Blackstone Griddle Smash Burgers with Caramelized Onions

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These crispy Blackstone griddle smash burgers with caramelized onions deliver a perfect balance of smoky, crispy edges and sweet, soft onions for an easy, satisfying homemade meal.

Ingredients

Scale
  • 1 pound ground beef (80/20 blend)
  • 1 large yellow onion, thinly sliced
  • Salt and freshly ground black pepper, to taste
  • 1–2 tablespoons vegetable oil or canola oil
  • 4 cheese slices (optional; American, cheddar, or pepper jack)
  • 4 burger buns (brioche or potato rolls recommended)
  • 2 tablespoons butter, softened (for toasting buns)
  • Optional toppings: pickles, lettuce, tomato slices, mustard, ketchup, mayo

Instructions

  1. Preheat your Blackstone griddle to medium-high heat (about 400°F).
  2. Slice the onion thinly and add 1 tablespoon of oil to the griddle. Spread onions evenly and cook on medium heat, stirring occasionally, for about 15 minutes until golden and soft.
  3. Form the beef into loosely packed balls, about 4 ounces each, without overworking the meat.
  4. Lightly oil the griddle surface. Place beef balls spaced apart on the hot griddle.
  5. Smash each ball firmly down with a spatula or burger press until about 1/4 inch thick. Hold pressure for 10-15 seconds to set the crispy crust.
  6. Season the patties generously with salt and pepper.
  7. Cook patties for 2-3 minutes without moving them until edges are crisp and brown.
  8. Flip patties carefully and add a slice of cheese if using. Cook another 1-2 minutes until cheese melts and patties are cooked through.
  9. Butter the buns lightly and toast them on the griddle for 1 minute until golden.
  10. Assemble burgers starting with the toasted bun bottom, add the patty with melted cheese, pile on caramelized onions, add preferred toppings, and finish with the top bun.

Notes

Do not over-smash patties to avoid dryness. Keep griddle hot before smashing for crispy edges. Cook onions low and slow for best caramelization. Let toasted buns rest off heat before assembling to prevent sogginess. Can substitute cast iron skillet if no griddle is available.

Nutrition

Keywords: smash burgers, Blackstone griddle, caramelized onions, crispy burgers, homemade burgers, easy burger recipe, quick dinner

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