How To Reheat White Castle Sliders? (top 4 methods revealed)

FACT: White Castle is one of the original fast-food restaurants…


Do you want to know the best part? They offer the opportunity to purchase burgers that can be reheated in the comfort of your own home (super convenient right)?


How To Reheat White Castles Sliders?

If frozen, microwave for 60 seconds and 34 secs if already thawed. Depending on the microwave’s wattage, heating times may vary. For food safety, heat to 165 degrees F. (74 degrees C).



After doing more investigation, I discovered additional facts that you should be aware of, so please continue reading…



4 Methods For Reheating White Castle Burgers

1. Microwave White Castle Burgers for a quick reheating


Microwaving the burgers is a quick and convenient way to reheat them. It is advised in the recipe for the frozen White Castle sliders purchased from a grocery shop.


Simply open up one side of the plastic wrap and separate the sliders while keeping them contained inside the wrap. Heat them for 35 seconds on a ‘high’ setting while still wrapped in plastic wrap; if frozen, microwave for 1 minute.


  • When microwaving leftover burgers from a burger business, however, be sure to separate the meat from the bread and remove the pickles, tomatoes, and lettuce before microwaving.

  • Wrap the burgers in a paper towel that has been gently dampened to prevent them from drying out. Cook for 60-90 seconds in the microwave, with the cheese and onions on top, until the beef is no longer pink.

  • Place the buns on top of a toaster, flipping them periodically to prevent them from burning. Separately toasting and heating the buns should help to keep more of the bread’s texture while also heating the buns.

  • However, if you don’t have the time to do so, just keep the bread and patties together and reheat everything together. Although the bread may turn a little mushy, it will still taste good.

  • When the pickles, lettuce, and tomatoes have been re-added, turn the heat down to low and cover.

2. Countertop toaster oven may be used


Would you want to save some time and energy by baking in a toaster oven rather than a conventional oven? Thought that might peek your interest!


  • Remove the burger from the bun, scrape out the condiments, and put the beef patties, cheese, and onions in a toaster oven set to 350°F (176°C) for about 10 minutes.

  • If it is safe and possible, put a baking sheet filled with hot water in the bottom of the toaster oven.

  • A layer of aluminum foil should be placed below the crease at the bottom of the oven to prevent messes from forming.

  • Heat it in the toaster oven for 5-6 minutes, or until it is warm.

  • Make certain that the meat is completely cooked on the inside. It should be warm in the center if it is still chilly in the middle after a few minutes.

  • Remove the buns from the oven and cook for another 30 seconds without adding the pickle slices.

  • Reassemble the hamburger and savor the results.


FYI: When it comes to toaster ovens, they may be too tiny to accommodate a steamer tray and boiling water, preventing you from obtaining the steam heat you need. However, it will still heat up beautifully and taste fantastic even after being chilled.

3. The stovetop method


You can also reheat your slider burgers on the stovetop, which is another excellent alternative. On the burner, there are a few different methods to reheat a White Castle slider burger.


  • In order to replicate their original design, a steamer basket insert in a saucepan is recommended. To begin, bring the water to a boil in a saucepan over high heat, being sure to keep the steamer out of the pot.

  • Once the water begins to steam, place some tin foil on the steamer basket to keep it from burning.

  • Disassemble the hamburger and arrange your burger patties, topped with cheese and onions, on top of the aluminum foil. Reduce the heat to low and cover the pan.

  • Steam the patties for approximately 10 minutes, or until they are cooked through.

  • Now add the buns and steam for another minute; the aluminum foil prevents the buns from being soggy and moist.

  • Reassemble the burger after it has been properly warmed, and it is ready to serve. ENJOY!

4. Reheat them in the oven until they are hot


Although using the oven may take longer, it is the most effective method of reheating a previously fresh White Castle burger.


  • Preheat the oven to 350 degrees Fahrenheit (176 degrees Celsius).

  • Remove the pickle slice from the interior of the burgers since you don’t want to eat hot pickle slices, then use a knife to scrape the condiments off the bread and the patties.

  • Take a regular broiler pan with a rack and set it aside.

  • FYI: Essentially, this is a sheet pan with an additional slitted rack or sheet pan that fits directly on top of the original sheet pan.

  • Prepare a pot of water in any manner you want (kettle, microwave, or stovetop). Using care, slowly pour the boiling water into the broiler tray.

  • FYI: It is critical that the water level in the first pan does not rise over the second pan; the water should not come into contact with the second pan since you do not want to boil the burgers but rather steam them.

  • Following that, place tin foil on the second tray with the slits to make cleanup a breeze later.

  • Make a few small holes in the tin foil with a fork to let the steam to escape.

  • On a tray, arrange the leftover White Castle burgers along with the cheese and onions, and bake for 20 minutes. Place this tray on top of the broiler tray, which should be filled with hot, boiling water.

  • Another piece of aluminum foil should be used to tent the burgers now.

  • Allow 10-12 minutes for the burgers to cook in the oven. Following completion of cooking, the beef patty should be hot and juicy, with the cheese being lovely and melted.

  • Now, add the buns and cook for another minute or two until they are warm.

  • When you’re ready to serve, remove the tray from the oven and reassemble the burger, topping it with some ketchup or mustard and reattaching the pieces of pickles, tomatoes, and lettuce.

When using frozen store-bought sliders, just take them from their wrappers, divide them and proceed as directed above. When using frozen vegetables, allow an additional 2-3 minutes to be added to the cooking time.


White Castle burgers have some interesting facts about them

1. The patties of White Castle burgers are punctured with five holes. The holes in the patties allow the patties to cook more quickly, and the concept of inserting holes in the patties was initially proposed by a guy by the name of Earl Howell in 1954.

2. White Castle burgers are not cooked, but rather steamed. In order to do this, they first stack a mound of onions on top of a grill before placing the patties on top of the grill. In order for them to be cooked, steam is forced through the patty holes from the onions. As a result, the White Castle burgers have a particular flavor, and you can always detect the presence of onions.

3. It is not necessary to flip White Castle burgers while they are being cooked. This is because the technique of steaming the burgers avoids the need to turn the patties, which is a necessary part of the process.

4. Dietary restrictions do not apply to White Castle burgers. They feature a vegetarian slider that is devoid of beef, which was debuted in 2014. In other words, if you are a vegetarian, you may still eat at White Castle.



Related Questions:

How to reheat leftover white castle burgers in air fryer?

Put two to four frozen White Castle burgers upside down in the air fryer basket that has already been heated. Set the timer for 10 minutes. Check every 5 minutes.


What is the best method to prepare frozen White Castle burgers?

Remove frozen hamburgers from their packaging, split them, and lay them on a boiler pan with a slot in it. Fold the hamburgers and the slotted section of the broiler pan in half and close the edges securely. If frozen, cook for 15-20 minutes; if thawed, cook for 10-15 minutes. Allow the pan to cool for 2 minutes after it has been heated before removing the foil.


Best way to steam White Castle burgers?

Start by placing the slotted broiler pan over the hot water. Split frozen hamburgers and place them on a slotted broiler pan. Close the borders of the hamburgers and slotted broiler pan. If frozen, cook 15-20 minutes; thawed, 10-15.


How long do White Castle burgers stay fresh in the refrigerator?

Once you bring home frozen sliders, store them in the fridge for up to 10 days. The sliders thaw more slowly, allowing them to relax. Then microwave the burgers for 30 seconds.

How To Reheat White Castle Sliders? (top 4 methods revealed)