Set 400°F and preheat the oven. This specific temperature is necessary as it heats the hamburger without overcooking it. To avoid wasting any time, preheat the oven while you are busy with disassembling the burger.

Put the patties on the baking sheet.

Adjust the timer for 3 minutes to reheat the burger. Wear an oven mitt and flip the patty after the timer is up. Make sure that both sides of the patty are heated evenly.

Place the buns on the rack. Stick them with the flipped burgers.

Cook for two minutes, after which your buns develop a golden brown color.

Combine your preferred toppings, condiments, and other fillings. If you don’t have any leftover fillings, then you can add some of your own! Add tomato slices and lettuce from the fridge onto your burger.