Jalapeño Smash Burger
Creamy Green Herb Sauce

By CookFrames
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Get the ultimate crust with this spicy jalapeño smash burger. Featuring crispy beef patties, melted cheddar, and a vibrant, tangy green herb sauce.

↓ The ingredients ↓ The steps

The smash burger technique is all about maximizing flavor through the Maillard reaction, creating lacy, crispy edges that trap the meats savory juices. By smashing jalapeños and onions directly into the patty, their flavors infuse the beef as it cooks. Finished with a bright, herbaceous green sauce, this burger balances rich, melted cheddar with an acidic, fresh kick.

A towering double jalapeño smash burger dripping with melted cheddar and fresh green herb sauce.
A towering double jalapeño smash burger dripping with melted cheddar and fresh green herb sauce.
Prep15 mins
Cook10 mins
Total25 mins
Yield2 burgers
DifficultyMedium
Calories850 kcal

Ingredients

Instructions

  1. 1Prepare the patty
    A raw ground beef meatball being placed into a seasoned hot skillet.

    Begin by placing a raw beef meatball onto a preheated, hot pan. This high heat is essential for developing a deep, flavorful sear on the meat.

    Tip: Ensure your pan is sufficiently hot before adding the meat to guarantee a good crust.
  2. 2Flatten the patty
    A metal press flattening a beef meatball into a thin patty in a hot skillet.

    Using a heavy press or spatula, firmly flatten the beef meatball into a thin patty directly in the hot pan. This technique creates a delicious, crispy edge characteristic of a smash burger.

    Tip: Press down firmly and hold for a few seconds to maximize contact with the pans surface.
  3. 3Season the beef
    Salt and pepper being ground directly over a searing beef patty in a skillet.

    Generously season the flattened patty with salt and pepper to taste. Applying seasoning directly to the meat during cooking enhances its natural savory flavor.

    Tip: Seasoning while the patty is searing locks in flavor and creates a tasty crust.
  4. 4Add aromatics
    Fresh jalapeño rings and onion slices placed atop a sizzling beef patty.

    Distribute thinly sliced jalapeños and onions over the top of the cooking beef patty. Allowing them to sit on the hot meat will soften the onions and infuse the beef with the peppers heat.

    Tip: Thin slices ensure the vegetables soften and cook through perfectly as the burger finishes.
  5. 5Melt the cheese
    A slice of cheddar cheese resting on top of a beef patty covered with jalapeños and onions.

    Place a slice of cheddar cheese directly over the patty, jalapeños, and onions. The residual heat from the patty and pan will melt the cheese into a gooey, savory topping.

    Tip: Cover the pan for a moment if you want the cheese to melt extra quickly.
  6. 6Prepare the fresh herbs
    Fresh green herbs being finely chopped with a sharp chefs knife on a wooden cutting board.

    Gather fresh herbs and finely chop them on a cutting board to prepare them for the sauce. These herbs will add a vibrant, aromatic freshness to the dressing.

    Tip: Ensure your knife is sharp to avoid bruising the delicate herb leaves, which helps maintain their bright color and flavor.
  7. 7Prepare the green sauce
    Mayonnaise, mustard, and lime juice being mixed with fresh herbs in a small glass bowl.

    In a small glass bowl, combine mayonnaise, mustard, red wine vinegar, and lime juice. Whisk in the freshly chopped herbs until the sauce is smooth and well-incorporated.

    Tip: Whisk the vinegar and lime juice into the mayonnaise first before adding the herbs to ensure an even consistency.
  8. 8Assemble the burger
    A freshly toasted burger bun being spread with green herb sauce, ready for the patty.

    To assemble, take a toasted bottom bun and spread a generous layer of the prepared green herb sauce over it. Carefully place the hot, cheesy beef patty directly onto the sauced bun.

    Tip: Toasting the bun helps create a barrier that prevents the sauce from making the bread soggy.

Storing and Reheating

Refrigerator
3 days
Store cooked patties and green sauce in separate airtight containers. Buns should be kept wrapped at room temperature.
Reheating
2–3 min
Reheat patties in a hot skillet for a minute per side to revive the crust and melt the cheese. Avoid microwaving, which ruins the texture.

Burn It Off

Running
~80 minutes at a vigorous pace (~11 km/h).
Hyrox
~90 minutes of high-intensity functional training.
Brisk Walking
~2 hours 50 minutes at a brisk pace (~5 km/h).

Frequently Asked Questions

A lack of crust usually means your pan wasnt hot enough, or you used beef that was too lean. You need incredibly high heat and an 80/20 ground beef ratio to achieve that signature lacy, caramelized edge.
While a heavy cast-iron press makes it easy, you can use any sturdy, flat metal spatula. Press down firmly on the spatula with a heavy object like a can or rolling pin to get the meat as thin as possible during the first 10 seconds of cooking.
Yes! The green herb sauce actually tastes better when made a few hours in advance, allowing the tang and herb flavors to meld. Keep it in an airtight container in the fridge for up to 3 days.
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