If you own a Blackstone griddle, you already know that making burgers on a flat-top iron surface changes the game entirely! Traditional thick grill burgers often dry out, butΒ Blackstone Smash BurgersΒ cook in under 4 minutes, locking in all the juices while creating those famous crispy, lacy edges.

This recipe delivers diner-style double cheeseburgers topped with melted American cheese, paper-thin caramelized onions, and a quick homemade secret burger sauce.
πΒ Looking for a refreshing summer drink to pair with your burgers? Check out my viral [Copycat 7 Brew Ocean Breeze Iced Drink]!
π The Ingredients (The “Lacy Edge” Secret)
Simple, fresh ingredients are key to the perfect griddle burger:
- 1 Β½ lbs Ground Beef (80/20 Blend):Β (80% lean, 20% fat is essentialβdo NOT use extra lean beef or your burgers won’t get crispy!).
- 8 slices American Cheese:Β (Deli-sliced American cheese melts better than any other cheese).
- 1 large Yellow Onion:Β (Sliced paper-thin using a mandoline).
- 4 Brioche BunsΒ &Β 2 tbsp ButterΒ (For buttering the buns).
- 1 tsp Garlic Powder, Salt, and Freshly Cracked Black Pepper.
- Secret Burger Sauce:Β Β½ cup Mayonnaise, 2 tbsp Ketchup, 1 tbsp Sweet Relish, and 1 tsp Yellow Mustard.
π³ Step-by-Step Instructions
Step 1: Preheat the Blackstone
Preheat your Blackstone griddle to high heat (around 450Β°F to 500Β°F). You want the flat top screaming hot! Do NOT oil the griddleβthe fat from the beef will prevent sticking and create that iconic crust.
Step 2: The Meatball & Onion Drop π§
Divide your ground beef into 8 loosely packed balls (about 2.5 oz each). Do not press them into patties yet! Place the beef balls onto the hot griddle, leaving plenty of space between them. Immediately pile a handful of paper-thin sliced onions directly on top of each beef ball.
Step 3: The Heavy Press (The Smash Hack) π¨
Place a piece of parchment paper over an onion-covered beef ball. Using a heavy griddle press or a sturdy metal spatula, press down firmly with all your weight for 10 seconds until the patty is paper-thin. The parchment paper prevents the beef from sticking to your press!
Step 4: The 2-Minute Scrape & Flip
Season generously with salt, pepper, and garlic powder. Cook for 2 minutes until the edges are dark brown and crispy. Using a sharp metal spatula, scrape firmly underneath the patty to keep that crispy crust intact, and flip!
Step 5: Cheese & Toast
Immediately place a slice of American cheese on each patty. Stack two patties together so the cheese melts in between. Toast your buttered brioche buns on the griddle for 30 seconds, slather with secret sauce, add the double smash patties, and serve hot!
πΒ Need a cool summer side dish for your cookout? Try my 10-minute [Watermelon Feta Mint Salad]!
π‘ Pro Blackstone Cleaning Tip:
While the griddle is still warm, squirt a little water onto the flat top and scrape away any food residue with your bench scraper. Wipe clean with a folded paper towel held by tongs, then apply a thin layer of oil to keep your Blackstone seasoned!



