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Classic Smash Burger
American Main Course Medium

Classic Smash Burger

Two thin, crispy-edged smash patties, melty American cheese, pickles, and special sauce — the classic American diner burger, made right at home.

Prep10min
Cook8min
Total18min
Serves2 burgers

The Story

I first had a proper smash burger at a tiny counter-service spot in Brooklyn — no frills, just a griddle, a spatula, and the best burger I had eaten in years. The secret was obvious the moment I watched them make it: they smashed the beef hard and fast on a screaming-hot cast iron surface, creating those impossibly thin, lacy, caramelised edges that a thick patty could never achieve.

Back home I spent a few weekends getting it right. The fat ratio matters — 80/20 gives you enough fat to baste the patty as it cooks without making it greasy. The cheese has to be American (yes, really): it melts at the exact right temperature and creates that glossy, diner-perfect layer. And the special sauce? It takes five minutes and is better than anything from a bottle.

This is not a burger for the weekend project. It is a Tuesday-night burger — 18 minutes from fridge to plate, every time.
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Recipe by admin

Equipment

  • Cast iron griddle or flat skillet Must get very hot u2014 above 200 C
  • Sturdy flat spatula Thin-edged metal, for smashing
  • Parchment paper squares One per ball, stops sticking

How to make it

Special Sauce

  1. 1
    Mix the sauce

    Combine mayonnaise, mustard, ketchup, pickle brine, and onion powder in a small bowl. Stir well and refrigerate until needed. The sauce keeps for up to a week.

    💡 Make this ahead — the flavour improves after 30 minutes in the fridge.

Smash Burgers

  1. 2
    Heat the griddle

    Place your cast iron griddle or heaviest skillet over high heat for at least 3 to 4 minutes. It should be smoking hot. Add a thin film of neutral oil and let it shimmer.

    💡 No oil? A tiny bit of butter works — it browns fast and adds flavour.
  2. 3
    Smash the patties

    Place one beef ball on the griddle and lay a parchment square on top. Press down hard with your spatula — about 1 cm thin. Hold for 10 seconds. Repeat for the second ball. Season with salt and pepper.

    💡 Smash within the first 30 seconds — once the crust forms, you cannot thin it further.
  3. 4
    Cook and flip

    Cook undisturbed for 2 minutes until the edges are brown and crispy. Scrape under each patty and flip confidently. Immediately place 2 cheese slices on each patty.

    💡 A crust that is fighting back is a good sign — a little resistance means good browning.
  4. 5
    Steam the cheese

    Add a teaspoon of water to the edge of the griddle, quickly cover with a cloche or large metal bowl. Cook for 30 to 45 seconds until the cheese is molten.

    💡 No cloche? A large heatproof bowl works perfectly.

Assembly

  1. 6
    Toast the buns

    Butter the cut sides of the buns and toast them on the still-hot griddle for 30 to 60 seconds until golden. Watch closely — they burn fast.

  2. 7
    Stack and serve

    Spread special sauce on both bun halves. Build: bottom bun, diced onion, double-cheese patty stack, pickles, lettuce (optional), more sauce, top bun. Serve immediately.

    💡 Smash burgers do not wait — eat while the cheese is still melty.

Nutrition per serving

720kcal Calories
42g Protein
48g Fat
20g Sat. fat
32g Carbs
6g Sugar
1g Fibre
980mg Sodium

FAQ

Can I use a regular non-stick pan?
You can, but it will not get hot enough for proper caramelisation. Cast iron or carbon steel is strongly recommended — the thermal mass is what creates the crust.
What fat percentage beef is best?
80/20 (80% lean, 20% fat) is the gold standard. Leaner meat dries out; fattier meat shrinks and curls. If you can grind your own from chuck, do it.
Can I make these ahead?
The sauce keeps refrigerated for a week — in fact it improves overnight. The patties are best cooked fresh; they take under 10 minutes, so it is worth waiting.
Why American cheese specifically?
American cheese melts at a lower temperature than most natural cheeses and becomes perfectly smooth and glossy — ideal for a steamed smash burger. Cheddar works too but needs more heat to melt evenly.

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