Go Back
Back to Top
A seared smash burger with cheese, fries, and herbs on a rustic plate.

Blackstone Smash Burgers with Caramelized Onions

ZikoWilson
Juicy, crispy-edged smash burgers cooked on a Blackstone griddle, topped with melty cheese and caramelized onions. Perfect for backyard barbecues or a quick dinner, these flavorful burgers are easy to make and packed with restaurant-quality taste.
Print Recipe Pin Recipe
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Course Main Course
Cuisine American
Servings 4
Calories 520 kcal

Equipment

  • Blackstone griddle
  • Spatula (heavy-duty for smashing burgers)
  • Small mixing bowl
  • Tongs

Ingredients
  

Burger Patties:

  • 1 lb ground beef 80/20 for best flavor
  • 1 tsp kosher salt
  • 1/2 tsp black pepper

Caramelized Onions:

  • 2 large yellow onions thinly sliced
  • 2 tbsp unsalted butter
  • 1 tbsp olive oil
  • 1 tsp sugar optional, for extra sweetness

Assembly:

  • 4 burger buns
  • 4 slices cheddar cheese
  • Lettuce tomato slices, and pickles (optional)

Instructions
 

Prepare the Patties:

  • Divide the ground beef into 4 equal portions. Roll each into a loose ball without over-packing.

Caramelize the Onions:

  • Heat the Blackstone griddle on medium heat. Add butter and olive oil, then stir in the sliced onions. Cook, stirring occasionally, for 15–20 minutes until golden brown. Add sugar for extra sweetness, if desired. Transfer to a small bowl and set aside.

Toast the Buns:

  • Lightly butter the insides of the burger buns and place them on the griddle until toasted golden brown. Set aside.

Cook the Smash Burgers:

  • Increase the griddle heat to high. Place the beef balls on the griddle and smash them flat using a sturdy spatula. Sprinkle each patty with salt and pepper. Cook for 2–3 minutes until a crispy crust forms, then flip. Add a slice of cheddar cheese to each patty and cook for another 2 minutes.

Assemble the Burgers:

  • Place the cooked patties on the bottom bun, layer with caramelized onions, and add lettuce, tomato, and pickles if desired. Top with the bun and serve immediately.

Notes

Nutrition Information (Per Serving):

SERVING: 235g | CALORIES: 520kcal | CARBOHYDRATES: 10g | PROTEIN: 30g | FAT: 41g | SATURATED FAT: 14g | CHOLESTEROL: 110mg | SODIUM: 900mg | POTASSIUM: 480mg | FIBER: 4g | SUGAR: 2g | VITAMIN A: 150iu | VITAMIN C: 4mg | CALCIUM: 180mg | IRON: 2.3mg

Recipe Notes:

  • Ingredient Substitutions:
    • Use ground turkey or plant-based meat for a lighter or vegetarian option.
    • Swap cheddar cheese with Swiss or pepper jack for a flavor twist.
  • Storage Tips: Store leftover patties and onions in an airtight container in the fridge for up to 3 days. Reheat on the griddle for best results.
  • Variations: Add a drizzle of barbecue sauce or spicy mayo for extra flavor.
Keyword Blackstone recipes, caramelized onions, easy Blackstone recipes, griddle burgers, smash burgers
QR Code linking back to recipe