Smash Burgers with Special Sauce
Crispy caramelized edges, juicy double patties, and a homemade special sauce. This smash burger recipe delivers restaurant quality results in under 20 minutes.
The first time I smashed a burger patty on a screaming hot cast iron pan, I understood why every great diner cook has been doing this for decades. The beef hits the surface, the fat renders instantly, and those edges go crispy and caramelized in a way you simply cannot get from a pre-formed patty. After twenty years in professional kitchens, homemade smash burgers are still one of my favorite things to cook on a weeknight.
These homemade smash burgers start with two thin, crispy edged beef patties, loaded with melted cheese, stacked on a soft pillowy bun, and finished with our homemade special sauce. Unlike our Umami Burgers or Turkey Burgers, this smash burger recipe is all about technique. High heat, thin patties, and that irresistible caramelized crust. This is the burger that beats the restaurant version every single time. Serve it alongside our Old Fashioned Potato Salad and a glass of Sea Sun Pinot Noir for a perfect summer meal.
What Makes a Smash Burger Different?
A smash burger is made by pressing a loose ball of ground beef against a screaming hot surface the moment it hits the pan. That pressure maximizes the contact between the meat and the heat, triggering the Maillard reaction, the browning process behind that crispy, caramelized crust.
A few things make the difference between good and great:
- 80/20 ground beef. The fat content is non-negotiable. It's what caramelizes against the cast iron and creates those crispy edges.
- Cast iron. It holds heat better than any other pan under the pressure of smashing.
- Double patties. Two thin patties means twice the crust surface area and twice the flavor.
Jump to:
What You'll Need
Here's everything you need to make the best homemade smash burgers:
- For the sauce: mayonnaise, ketchup, BBQ sauce, garlic powder
- For the burgers: 80/20 ground beef, salt and pepper, American cheese, brioche buns
👉 See recipe card below for exact quantities.
How to Make Them
- Make the sauce first. Combine the mayonnaise, ketchup, BBQ sauce, and garlic powder and refrigerate while you cook. The flavors come together as it sits.
- Get your pan screaming hot. Cast iron needs a full 5 minutes over high heat before the first patty goes in. This is the most important step. If the pan isn't hot enough, the beef will steam instead of sear.
- Work fast when you smash. The moment the beef ball hits the pan, press down hard with the flat spatula. You have about 10 seconds before the crust starts to form and the patty resists flattening. Season immediately with salt and pepper.
- Leave it alone. Once smashed, don't touch it. Three minutes of uninterrupted contact with the pan is what builds that caramelized crust. When it releases cleanly on its own, it's ready to flip.
- Stack and serve immediately. Two patties per burger, sauce on the bun, your favorite toppings. Smash burgers are best eaten fresh off the pan.
🥫The Smash Burger Sauce
Whisk together mayonnaise, ketchup, BBQ sauce, and garlic powder until smooth. Refrigerate while you cook. The flavors deepen as it sits. Make a double batch and keep it in the refrigerator for up to a week.
Would you like to save this recipe?
We'll email this post to you, so you can come back to it later!
🔪Top tip
The number one mistake home cooks make is a pan that isn't hot enough. Cast iron needs a full 5 minutes over high heat before the first patty goes in. If a drop of water vaporizes instantly, you're ready.
Make Ahead and Storage
- Make ahead. Roll your beef balls up to 24 hours in advance and refrigerate until ready to cook. The sauce can be made up to a week ahead and stored in an airtight container in the refrigerator.
- Leftovers. Smash burgers are best eaten fresh off the pan. If you do have leftovers, store patties separately from buns in an airtight container in the refrigerator for up to 3 days.
- Reheating. Reheat patties in a hot cast iron skillet for 1 to 2 minutes per side. Avoid the microwave. It will soften the crust.
🍔 More Burger Recipes
FAQ
Our smash burger sauce combines mayonnaise, ketchup, BBQ sauce, and garlic powder. It takes two minutes to make and keeps in the refrigerator for up to a week.
Once. Flip it one time only, after a full 3 minutes on the first side. Resist the urge to check underneath. Uninterrupted contact with the pan is what builds the crust.
No. Because the patties are so thin, they cook through completely. That's by design - the flavor comes from the caramelized crust, not from a pink center.
A flat cast iron griddle pan placed directly on the grill grates works well. An open grate won't give you the surface contact you need for the smash technique.
Related recipes
🍅 making this recipe?
- Please feel free to reach out with questions. We're happy to help.
- If you enjoyed it, please leave us a comment with ⭐️⭐️⭐️⭐️⭐️
Smash Burger recipe
Keith's smash burger recipe delivers crispy caramelized edges and juicy double patties in under 20 minutes, topped with an easy, homemade special sauce.
- Total Time: 25 minutes
- Yield: 2 double smash burgers 1x
Ingredients
for the sauce:
- ¼ cup mayonnaise
- ¼ cup ketchup
- 1 teaspoon BBQ sauce
- ¼ teaspoon garlic powder
for the burgers:
- 12 oz 80/20 ground beef
- salt and pepper to taste
- 2 slices American cheese
- 2 brioche buns
- non-stick cooking spray
Instructions
- Combine the mayonnaise, ketchup, BBQ sauce, and garlic powder in a small bowl and mix until combined. Refrigerate until ready to serve.
- Separate beef into 4 equal 3 oz portions and roll into balls.
- Heat a cast iron grill pan on the grill, or a heavy bottom skillet on the stovetop, over high heat for 5 minutes.
- Place each beef ball on grill pan or skillet and press down firmly with a flat spatula until thin. Season with salt and pepper.
- Cook for 3 minutes per side. Top each patty with cheese in the last minute of cooking.
- Lightly spray buns with cooking spray and toast on the grill pan or skillet until golden.
- Place 2 patties on each bun, top with sauce and your favorite toppings and serve immediately.
Notes
- The smash window is short. You have about 10 seconds from the moment the beef ball hits the pan before the patty resists flattening. Press hard and flat.
- Don't move the patty after smashing. Leave it alone for the 3 minutes. Uninterrupted contact with the pan is what builds the crust.
- Cold beef smashes better. Keep your beef balls refrigerated right up until they hit the pan for a juicier burger.
- No cast iron? No problem. A heavy bottom stainless steel pan works well. Avoid non-stick - it can't handle the high heat this recipe requires.
- Prep Time: 10 minutes
- Cook Time: 15 minutes
- Category: burgers
Nutrition
- Serving Size: 2 burgers
- Calories: 667
- Sugar: 11.9 g
- Sodium: 2333.2 mg
- Fat: 36.7 g
- Carbohydrates: 32.9 g
- Protein: 48.9 g
- Cholesterol: 141 mg
This recipe is on repeat at our house. Those perfect patties-tender on the inside with perfectly crispy edges-are to die for!