How to Cook Frozen White Castle Burgers in the Microwave - Dinners Done Quick (2024)

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!

Why You Need This Recipe

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

1. Remove frozen White Castle sliders from all packaging

2. Wrap 2 sliders with the top bun facing down in a damp (not wet) paper towel. You do not need to separate them

3. Place wrapped sliders still bun-side down on a microwave safe plate

4. Cook on high for 35 seconds
5. Flip the burgers over, leaving the wrapping on, so they are now bottom bun side down on the plate

6. Cook again on high for an additional 35 seconds
7. Burgers are done when the internal temperature reaches 165°F
8. Cool for 1-2 minutes and enjoy!

How Long to Cook Frozen White Castle Burgers in the Microwave By Wattage & Quantity

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!

For sides, serve microwave frozen White Castle sliders with some simple Boxed Mac and Cheese in the Microwave, or mash up fast food favorites with some Arby’s Curly Fries in the Air Fryer!

Recipe FAQs

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

Other Microwave Recipes to Serve With Sliders

• How to Reheat Fries in the Microwave

Final Thoughts

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!

• Microwave White Castle Burgers web story