Spicy Jalapeño-Onion Smash Burgers

Why You’ll Love This Recipe

Spicy Jalapeño-Onion Smash Burgers bring bold, fiery flavor and irresistible crunch to your burger night. With thin, crispy-edged patties, caramelized jalapeños and onions, and melty cheese, these burgers pack heat and savory goodness in every bite. Quick to cook and easy to customize, they’re perfect for spice lovers who crave a juicy, sizzling smash burger with a kick.

ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

ground beef (80/20 for best flavor and texture)jalapeños (fresh, thinly sliced)yellow onion (thinly sliced)American cheese (or your favorite melty cheese)burger buns (preferably brioche or potato rolls)unsalted buttersalt and peppermayonnaise (optional)hot sauce (optional for extra heat)neutral oil (for cooking)

directions

Preheat a griddle or cast-iron skillet over medium-high heat until very hot.

Lightly oil the surface and add sliced jalapeños and onions. Cook, stirring occasionally, until softened and slightly charred. Remove and set aside.

Form the ground beef into loose 2-ounce balls (do not compact). Season with salt and pepper.

Place beef balls on the hot skillet, then immediately smash them flat using a heavy spatula or burger press. Hold for 10 seconds to get maximum sear.

Cook without moving for about 2-3 minutes until edges are crispy and browned.

Flip the patties, top with cheese, and cook for 1 more minute until melted.

Toast the burger buns with butter on the skillet until golden.

Spread mayo and hot sauce (if using) on the buns. Layer patties, then top with jalapeño-onion mixture.

Close the burgers and serve immediately.

Servings and timing

This recipe yields 4 burgers.Preparation time: 10 minutesCooking time: 10-12 minutesTotal time: 20-22 minutes

Variations

Swap jalapeños for serrano peppers for extra heat.

Use pepper jack cheese for even more spice.

Add avocado slices to balance the heat with creaminess.

Try pickled jalapeños for a tangy twist.

Use two patties per burger for a classic double smash experience.

storage/reheating

Store leftover cooked patties in an airtight container in the fridge for up to 3 days.Reheat in a skillet over medium heat for best texture or microwave in short bursts.Buns and toppings should be stored separately and assembled fresh when reheating.

FAQs

What makes smash burgers different?

Smash burgers are made by pressing beef into a hot griddle, creating crispy edges and a juicy interior.

Can I use pre-sliced jalapeños?

Yes, but fresh slices will have a better texture and flavor.

Do I need a special tool to smash the burgers?

A sturdy spatula or a burger press works great. Use parchment paper between the meat and tool if sticking is an issue.

Is this recipe too spicy for kids?

It may be—try reducing or removing the jalapeños for a milder version.

Can I grill these instead?

Smash burgers are best on a flat surface for the sear, but a griddle on your grill can work.

Can I make the patties in advance?

Yes, shape them into balls and refrigerate until ready to cook—don’t smash until cooking time.

How do I keep them from drying out?

Use 80/20 beef and avoid overcooking. The smash method sears in juices quickly.

Can I freeze smash burger patties?

Yes, freeze shaped balls raw and thaw before cooking.

Are brioche buns necessary?

No, but they add a rich, slightly sweet contrast that pairs well with the spicy filling.

What cheese melts best?

American cheese is classic, but cheddar, pepper jack, or gouda also melt beautifully.

Conclusion

Spicy Jalapeño-Onion Smash Burgers are the ultimate combo of heat, crunch, and juicy beef, making them a go-to for burger fans who love a little fire. With quick cook time and huge flavor, they’re perfect for weeknight dinners or weekend cookouts. Try them once, and you’ll be smashing burgers with spice on repeat.

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