Sometimes, I just want to enjoy some fast food burgers without having to leave the house. So, I decided to skip the delivery fees and learn how to cook frozen White Castle burgers in the microwave instead! That’s right, these yummy burger sliders go straight from freezer to delicious in minutes!
Sometimes, you’re just not able to get out of the house. We’ve all been there. Instead of missing out on your favorite fast food, though, you can reach for that box in your freezer! These frozen White Castle sliders taste almost like the real thing.
They come in classic burger slider, cheeseburger slider, and even breakfast slider forms, with sausage, egg and cheese. Not only can White Castle be a great way to start your day, but they’ve got lunch covered too.
If you’re looking to cook frozen White Castle burgers without a microwave, see my alternative preparation method for White Castle Sliders in the Air Fryer.
What You’ll Need
Frozen White Castle burger sliders (or any other flavor you like)
Condiments if desired (optional)
Additional toppings (optional)
Ingredient Tips and Substitutions
Frozen White Castle burger sliders are usually available in quantities of 6 or 16, though sometimes you can find larger quantities at a Sam’s Club or similar store. A serving is 2 sliders, so grab as many as you need based on how many you’re feeding!
Note that you can substitute cheese sliders, jalapeno cheese sliders, or chicken sliders instead of the original plain burger. However, chicken sliders take about 10 seconds longer and cheese sliders require about 20 additional seconds to cook than the original frozen White Castle burgers in the microwave (assuming a 1000W microwave)
For additional toppings, I always recommend adding pickle slices, as the frozen burgers do not come with pickles like you’d get in the restaurant. That is, unless you get the White Castle jalapeno cheese sliders, which I think are flavorful enough on their own
You can also add any other toppings or condiments that you’d normally put on a hamburger, if you’d like
Frozen White Castle Sliders Microwave Instructions
Remove frozen White Castle sliders from all packaging
Wrap 2 sliders with the top bun facing down in a damp (not wet) paper towel. You do not need to separate them
Place wrapped sliders still bun-side down on a microwave safe plate
Cook on high for 35 seconds
Flip the burgers over, leaving the wrapping on, so they are now bottom bun side down on the plate
Cook again on high for an additional 35 seconds
Burgers are done when the internal temperature reaches 165°F
Cool for 1-2 minutes and enjoy!
How Long to Cook Frozen White Castle Burgers in the Microwave By Wattage & Quantity
Microwave Wattage
2 Sliders
4 Sliders
6 Sliders
700 Watts
100 seconds
135 seconds
170 seconds
1000 Watts
70 seconds
95 seconds
120 seconds
1200 Watts
60 seconds
80 seconds
100 seconds
Cooking time for frozen White Castle burgers in the microwave for various wattages
Note that cooking times are based on the original frozen White Castle burger sliders. As noted in substitutions above, the cheese sliders and chicken sliders require slightly more cooking time.
This is the total cooking time required. All times noted above still require flipping halfway through cooking for even heating.
What Toppings to Put on a White Castle Burger
Garlic salt
Dill pickle chips
Jalapeno slices
Ketchup
Mustard
Honey mustard
BBQ sauce
Mayo
Horseradish sauce
Lettuce
Tomato
There are a variety of great toppings you can add to a White Castle microwave burger to dress it up just the way you like. This list is in no way exhaustive; feel free to try out all your favorite burger toppings!
Yes, you can microwave frozen White Castle sliders. They may be cooked directly from frozen, or thawed in advance if preferred.
Either way, one serving generally takes a minute or less to prepare.
Do You Microwave White Castle Burgers in Plastic?
No, you do not microwave White Castle burgers in plastic. Remove all external packaging before cooking them.
The plastic packaging sleeves are not safe for use in the microwave.
How Long Do You Cook Frozen White Castle Burgers in the Microwave?
You cook one serving of frozen White Castle frozen burgers for 1-2 minutes in the microwave in total, depending on the wattage of your appliance.
Note that you’ll need to flip the burgers halfway through to promote even heating.
What is the Best Way to Heat Up Frozen White Castle Burgers?
The best way to heat up frozen White Castle burgers if you want a soft, steamed bun is the microwave. If having more browning and seared meat is your preference, then you’ll want to use an air fryer.
How Long Do You Microwave White Castle Chicken Sliders?
You microwave White Castle chicken sliders for about 1 ½ – 2 minutes. They are slightly thicker than the original burger sliders and thus require slightly more time.
Exact time may vary based on the wattage of your microwave. The inside should reach 165°F for a proper level of cooking.
Recipe Expert Advice
If your defrost your White Castle sliders ahead of time, cook the thawed sliders for 20 seconds per side instead
The damp paper towel is used to help retain moisture, which steams the bun and helps keep it soft
Storage and Reheating
White Castle burgers should not be refrozen after thawing or cooking. Store any unused portions in the refrigerator for up to 3 days
To reheat White Castle burgers, wrap in a damp paper towel and microwave on high for 40 seconds, flipping halfway through, until an internal temperature of 165°F is reached. This applies for previously cooked frozen sliders, as well as restaurant leftovers
Now that you know how to cook frozen White Castle burgers in the microwave, you’ll always want to keep some on hand. They’re great for satisfying that fast food craving without having to leave the house. Plus, they’re ready in about 1 minute, making them perfect even in a rush.
The microwave does a great job of getting you a soft, steamed bun and heats the sliders through, even from frozen. However, if you like a more browned patty, you’ll want to check out the air fryer option instead.
Either way, these White Castle burgers are quick, easy, and best of all, tasty!
You can also enjoy these crispy White Castle Chicken Rings in the air fryer for another fast food snack at home!
Frozen White Castle burger sliders take only about 1 minute in the microwave. The soft, steamed bun makes for an irresistible alternative to sitting in a drive thru!
Wrap 2 sliders with the top bun facing down in a damp (not wet) paper towel. You do not need to separate them
Place wrapped sliders still bun-side down on a microwave safe plate
Cook on high for 35 seconds
Flip the burgers over, leaving the wrapping on, so they are now bottom bun side down on the plate
Cook again on high for an additional 35 seconds
Burgers are done when the internal temperature reaches 165°F
Cool for 1-2 minutes and enjoy!
Notes
White Castle burger sliders are usually available in quantities of 6 or 16 frozen, though sometimes you can find larger quantities at a Sam’s Club or similar store. A serving is 2 sliders, so grab as many as you need based on how many you’re feeding!
Note that you can substitute cheese sliders, jalapeno cheese sliders, or chicken sliders instead of the original burger. However, chicken sliders take about 10 seconds longer and cheese sliders require about 20 seconds longer to cook than original (in a 1000W microwave)
For additional toppings, I always recommend adding pickle slices, as the frozen version does not come with pickles like you’d get in the restaurant. Turns out pickles don’t freeze well!
You can also add any other toppings or condiments that you’d normally put on a hamburger, if you’d like
If your defrost your White Castle sliders ahead of time, cook the thawed sliders for 20 seconds per side instead (assuming a 1000W microwave)
White Castle burgers should not be refrozen after thawing or cooking. Store any unused portions in the refrigerator and reheat before consuming
The damp paper towel is used to help retain moisture, which steams the bun and helps keep it soft
Exact nutritional values will vary based on flavor selected, any additional condiments or toppings, and quantity consumed, so please consider this a guideline only
Keyword how to microwave white castle sliders, how to steam white castle burgers, white castle, white castle burgers, white castle frozen burgers, white castle heating instructions, white castle microwave instructions, white castle sliders, white castle sliders microwave instructions
I enjoy trying new recipes, creating my own, and dabbling with new techniques all the time. My husband loves to protest when I make him my guinea pig, but it’s all for the love of food!
My cooking philosophy is that great tasting food doesn't have to be complicated or time consuming to make. I'm a home cook with over 20 years of experience feeding myself and others. I've learned from a variety of different people, things I've learned online, and some trial and error as well.
I enjoy cooking a variety of foods, from convenience to comfort foods, as well as international cuisine. You can rest assured that all of my recipes have been actually made, thoroughly tested, and most importantly: tasted! I want you to enjoy my food as much as I do!
