Name: Double Smash Burger with Umami Onion Jam
Prep time: 35 min
Total time: 35 min
Yield: 2 servings
Ingredients: 1.25 lbs (20 oz) 85% lean ground beef (divided into 4 x 5 oz balls); 1 tbsp kosher salt; 1/2 tsp freshly ground black pepper; 4 slices sharp cheddar cheese; 2 brioche burger buns; 2 tbsp unsalted butter, softened; 1/2 cup yellow onion, thinly sliced; 1 tsp soy sauce; 1 tsp balsamic vinegar; 1 tsp brown sugar; 1 tbsp mayonnaise; 1 tbsp ketchup; 1 tsp Dijon mustard; 4 leaves crisp romaine lettuce; 4 slices ripe tomato

Double Smash Burger with Umami Onion Jam

miradu

This double smash burger is engineered for major flavor and serious protein. By using two thin, ultra-crispy beef patties per burger, you get a perfect contrast of caramelized crust and juicy interior, inspired by high-heat wok techniques. The secret weapon is a sweet-savory umami onion jam, boosted with soy sauce and balsamic for depth. Tangy sauce, buttery brioche, crisp lettuce, and ripe tomato balance the richness. This burger is perfect for a cozy California evening—cloudy weather demands a decadent, comforting classic, but with chef-driven upgrades!

Ingredients

Instructions

Make the umami onion jam: In a skillet over medium heat, melt 1 tbsp butter. Add sliced onions and a pinch of salt. Cook, stirring often, until deep golden and jammy (12-15 min). Stir in soy sauce, balsamic vinegar, and brown sugar. Cook 1-2 min more until glossy. Set aside.
Prep the buns: Spread remaining butter on the cut sides of buns. Toast in a skillet or griddle until golden. Set aside.
Form 4 loose 5-oz beef balls (do not overwork).
Heat a large cast iron skillet or griddle over high heat until just starting to smoke. Place beef balls in pan (work in batches if needed), spacing well. Smash each with a stiff spatula to 1/2-inch thickness. Sprinkle generously with salt and pepper.
Cook undisturbed until edges are deeply browned and juices bubble up (2-3 min). Flip, top with cheddar cheese, and cook 1 min more until cheese is melted. Remove burgers to a plate.
Mix mayo, ketchup, and mustard for burger sauce.
To build each burger: Spread sauce on both toasted bun halves. Layer lettuce and tomato on bottom bun. Stack two cheesy patties. Top with a generous spoonful of onion jam. Add top bun and press gently. Serve immediately.