Cheesy Griddled Smashburger Quesadillas (Printable Version)

Crispy quesadillas layered with thin smashburger patties, sharp cheddar, American cheese, and sweet caramelized onions.

# What You'll Need:

→ Smashburger Patties

01 - 1 pound ground beef, 80/20 blend
02 - 1 teaspoon kosher salt
03 - 1/2 teaspoon freshly ground black pepper
04 - 1 teaspoon garlic powder

→ Quesadillas

05 - 4 large flour tortillas, 8 to 10 inches each
06 - 8 slices sharp cheddar cheese
07 - 4 slices American cheese
08 - 1 small yellow onion, thinly sliced
09 - 2 tablespoons vegetable oil, divided
10 - 2 tablespoons unsalted butter, melted

→ Mayo-Mustard Sauce

11 - 2 tablespoons mayonnaise
12 - 1 tablespoon Dijon mustard
13 - 1 teaspoon Worcestershire sauce

→ Optional Garnishes

14 - Sliced pickles
15 - Chopped fresh cilantro
16 - Salsa
17 - Sour cream

# Steps:

01 - In a medium bowl, gently combine ground beef with salt, pepper, and garlic powder until just incorporated, avoiding overworking the meat to maintain texture.
02 - Preheat a flat griddle or heavy skillet over medium-high heat. Add 1 tablespoon vegetable oil and distribute evenly across the surface.
03 - Add sliced onion to one side of the griddle and cook, stirring occasionally, until golden and tender, approximately 5 minutes. Transfer to a plate and reserve.
04 - Divide beef mixture into 8 equal portions and gently roll each into a loose ball.
05 - Place 4 beef balls on the hot griddle with even spacing. Immediately press each with a heavy spatula or burger press to create thin patties approximately 4 inches in diameter.
06 - Cook patties without moving until edges are deeply browned and juices rise to the surface, approximately 2 minutes. Season the tops with salt and pepper.
07 - Flip patties and immediately top each with 1 slice cheddar and 1 slice American cheese. Cook until cheese melts and edges crisp, approximately 1 minute. Transfer to a plate.
08 - Wipe the griddle clean and reduce heat to medium. Lightly brush both sides of each tortilla with melted butter.
09 - For each quesadilla: place a tortilla on the griddle, layer 2 cheesy patties side by side, distribute cooked onions, drizzle with combined mayo-mustard sauce, and top with a second tortilla.
10 - Cook until the bottom tortilla achieves golden and crispy texture, approximately 2 minutes, applying gentle pressure with a spatula.
11 - Flip the quesadilla and cook the opposite side until golden and crispy, approximately 2 minutes.
12 - Transfer quesadilla to a cutting board and allow to rest for 1 minute. Slice into wedges using a sharp knife or pizza cutter. Repeat with remaining ingredients to create 2 large quesadillas total.
13 - Serve hot with pickles, cilantro, salsa, or sour cream as desired.

# Expert Advice:

01 -
  • You get burger-level satisfaction wrapped in crispy, buttery tortilla layers that hold together perfectly in your hands.
  • The smash technique creates those lacy, caramelized edges that make every bite taste like the best part of a diner burger.
  • It feeds a crowd fast because you can batch-cook patties and assemble quesadillas back to back on one griddle.
  • Leftovers reheat so well in a skillet that they taste even crispier the next morning.
02 -
  • Don't press the patties until they hit the hot griddle or they'll stick and tear instead of forming that crispy crust.
  • Let the quesadilla rest for a full minute before slicing or the cheese will run out and you'll lose half the filling.
  • If your griddle isn't big enough for two quesadillas at once, keep the first one warm in a low oven while you cook the second.
  • Wipe the griddle between batches to prevent burnt bits from ruining the clean, buttery crust on your tortillas.
03 -
  • Press the spatula down hard and fast when smashing the beef balls so you get maximum surface contact and those crispy edges.
  • Use parchment paper between the spatula and the beef if you're worried about sticking, then peel it off after the smash.
  • If the cheese isn't melting fast enough, cover the patties with a metal bowl or lid for 30 seconds to trap the heat.
  • Reheat leftovers in a dry skillet over medium heat, pressing gently with a spatula to restore the crispy texture.
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