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Savory Second-Day Smash Burger Revival

second-day smash burger - featured image

A quick and easy method to transform leftover burger patties into juicy, crispy smash burgers with fresh toppings and melty cheese.

Ingredients

Scale
  • Leftover cooked burger patties (beef, turkey, or plant-based)
  • 1 tablespoon unsalted butter or oil (Kerrygold butter preferred)
  • Cheese slices (American or cheddar, optional but recommended)
  • Fresh burger buns, lightly toasted
  • Pickles, thinly sliced
  • Onions, thinly sliced red or white (raw or lightly caramelized)
  • Lettuce leaves
  • Tomato slices
  • Condiments: mayo, ketchup, mustard, or favorite burger sauce
  • Salt and freshly cracked black pepper to taste

Instructions

  1. Prepare your toppings and buns: slice onions, pickles, tomatoes, and wash lettuce. Toast buns in a toaster or oven at 350°F for 3-4 minutes.
  2. Heat the skillet over medium-high heat and add 1 tablespoon of butter or oil. Let it melt and coat the surface evenly, about 3 minutes.
  3. Place a leftover burger patty in the pan. Using a spatula or heavy bowl wrapped in foil, press down firmly to flatten it to about half its original thickness. Hold for 15 seconds to form a crust. If the patty resists, warm it for a minute before smashing again.
  4. Season the patty with salt and cracked black pepper. Cook for 2-3 minutes without moving until crispy edges and a dark golden crust form.
  5. Flip the patty carefully and immediately top with a slice of cheese. Cook for another 1-2 minutes until melted and warmed through. Cover briefly with a lid if cheese doesn’t melt easily.
  6. Assemble the burger by spreading preferred condiments on toasted buns. Layer the melted-cheese patty, lettuce, tomato slices, onions, and pickles. Finish with the top bun.
  7. Serve immediately while hot to enjoy crispy edges and melty center.

Notes

Do not skip the smashing step to get a crispy crust. Use a hot pan to avoid steaming. Mix butter with oil to prevent burning. Add cheese immediately after flipping. Avoid pressing patties after flipping to keep them juicy. If burgers stick, lower heat and add more butter. Cook in batches to avoid overcrowding. For smoky flavor, finish with a quick broil under the oven.

Nutrition

Keywords: leftover burgers, smash burger, quick recipe, crispy burger, juicy burger, leftover makeover, easy dinner