How Long to Microwave Uncrustables? Quick Answer!

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It will take about 30 to 45 seconds to microwave your uncrustable. But it all depends on the manufacturer’s uncrustables microwave direction. So you need to check the label to know how long you can microwave it.

Uncrustables are a time-saving, delicious snack you can whip up quickly. These pre-made peanut butter and jelly sandwiches are a favorite among kids and adults alike, and for good reason. Not only are they tasty and satisfying, but they’re also incredibly convenient and easy to prepare. One of the best things about Uncrustables is that you can cook them in the microwave for a warm and gooey treat, perfect for those chilly afternoons or late-night study sessions.

In this article, we’ll share some tips on microwaving uncrustables and other helpful information to ensure that your snack time is always cheerful and stress-free.

How Long to Thaw Uncrustables in Microwave?

If you’re wondering how long to microwave frozen uncrustable, you should know that it can typically thaw an Uncrustable sandwich in the microwave for around 30 to 45 seconds.

To learn how to quickly thaw Uncrustables, remove it from its packaging and place it on a microwave-safe plate. Set your microwave to a low or defrost setting to ensure gentle thawing without overheating. Start with 30 seconds on low power and check the sandwich’s texture. If it’s still partially frozen, continue microwaving in 10 to 15-second increments until it reaches the desired thawed consistency.

Monitor the sandwich closely while microwaving to avoid overheating or drying out the bread. If the sandwich becomes too hot or starts to cook, reduce the power or decrease the microwaving time.

How Long Do You Put Uncrustables in the Microwave?

How Long Do You Put Uncrustables in the Microwave

The recommended cooking time for Uncrustables in the microwave is typically around 25 to 35 seconds. However, it’s important to note that cooking times can vary based on the wattage of your microwave and personal preference.

Microwaving an Uncrustable for too long can lead to overheating and potentially cause the filling to become extremely hot or the bread to become overly soggy. On the other hand, undercooking it may result in a partially frozen center.

To find the ideal cooking time, it’s best to start with the lower end of the suggested range (around 25 seconds) and then check the sandwich’s temperature and texture. If it’s not warmed through to your liking, you can continue microwaving in 5 to 10-second intervals until it reaches the desired level of warmth.

How Long to Microwave Frozen Uncrustable?

When microwaving a frozen Uncrustable, the cooking time is typically between 30 to 45 seconds. This range allows for the sandwich to thaw and heat up adequately.

Microwaving a frozen Uncrustable for too long can result in overheating, causing the filling to become extremely hot and the bread overly soft or soggy. On the other hand, undercooking it may leave the center partially frozen.

Start with the lower end of the recommended cooking time (around 30 seconds) to achieve the best results. After microwaving for this initial duration, check the sandwich’s temperature and texture. If it’s not thawed or warmed to your liking, you can continue microwaving in 5 to 10-second intervals until it reaches the desired level of warmth.

Can You Microwave Frozen Uncrustables?

Can You Microwave Frozen Uncrustables

Yes, you can microwave frozen Uncrustables. Microwaving is one of the quickest and easiest ways to thaw and warm them. 

To microwave a frozen Uncrustable, remove it from the wrapper, place it on a microwave-safe plate, and heat it on high power for around 30-35 seconds if your microwave is 1000 watts or higher. 

If your microwave is less than 1000 watts, you may need to microwave the Uncrustable for a slightly longer period, around 40-45 seconds. Always check the temperature of the Uncrustable before consuming it to ensure that it has been heated all the way through.

Can You Microwave Uncrustables?

Yes, you can microwave Uncrustables.

However, since Uncrustables are already pre-made and come fully thawed, microwaving them is not necessary. Microwaving a thawed Uncrustable may make it too hot and possibly overcooked or burnt. 

If you prefer your Uncrustable warm, let it thaw at room temperature for a few minutes or place it in the refrigerator overnight before consuming. If you decide to microwave a thawed Uncrustable, monitor it closely and only heat it briefly to avoid overcooking.

What Happens if You Microwave an Uncrustable?

Microwaves heat unevenly, which can lead to filling pockets becoming extremely hot while other parts remain cold. This creates a burning risk when taking a bite.

The sealed pocket of the Uncrustable can trap steam, potentially causing the sandwich to burst open and release hot filling, leading to burns.

The plastic packaging can melt or even explode in the microwave due to the heat and pressure.

Microwaving can make the bread soggy and lose its crispness. The peanut butter, jelly, or Nutella filling can become runny and lose its desired consistency.

Like uneven heating, the filling might melt inconsistently, resulting in a strange texture and taste.

Is It Okay to Microwave Uncrustables?

Is It Okay to Microwave Uncrustables

Yes, it is okay to microwave Uncrustables if you prefer them warm. 

When microwaving Uncrustables, keeping a few things in mind is important. Microwaving times may vary depending on the wattage of your microwave, so it’s a good idea to start with a shorter cooking time and adjust as needed.

If you prefer a softer, more thawed sandwich, you can microwave it for around 20-30 seconds. This will help to defrost the sandwich and make it easier to bite into. However, if you want a warmer, more heated sandwich, microwave it for 40-60 seconds. Be cautious not to overheat it, as this can cause the filling to become excessively hot.

Allow the Uncrustables sandwich to cool for a moment before eating, as the filling can retain heat and may burn your mouth if consumed immediately. The sandwich will continue to warm up slightly after removal from the microwave, so use caution when handling it.

Can You Warm up an Uncrustable?

No, you should not warm up an Uncrustable.

While you technically can warm up an Uncrustable, the manufacturer does not recommend it due to safety concerns. The filling can get unevenly heated and hot, posing a burning risk.

If you’re looking for a warm alternative, consider other methods like using a toaster oven or pan-frying with butter. However, be cautious and monitor the cooking closely to avoid burning or melting the bread.

Is It Bad to Microwave Uncrustables?

Yes, it is bad to microwave Uncrustables.

While some might do it, the manufacturer advises against it due to safety concerns. The filling can heat unevenly, leading to hot spots that could burn your mouth. Additionally, the bread could become tough or rubbery.

For a safe and enjoyable experience, following the manufacturer’s recommendations and thawing Uncrustables before eating is best.

How Long Do You Heat up Uncrustables

Heating an Uncrustable typically takes around 30 to 45 seconds on high power if microwaving from frozen.

Microwaves vary in power, so it’s a good idea to start with a shorter heating time and then adjust accordingly to achieve the desired level of warmth. Overheating Uncrustable may make the filling excessively hot or the bread too soft.

To ensure the sandwich is heated evenly, you can rotate the Uncrustable halfway through the heating process. Always use caution when removing the heated Uncrustable from the microwave, as it may be hot. Allow it to cool for a short time before consuming.

Best Way to Warm up an Uncrustable

The best way to warm up an Uncrustable depends on your priorities: speed, texture, or safety. Here are some options, along with their pros and cons:

  • Thaw at room temperature (30-60 minutes): This is the safest and healthiest method, recommended by the manufacturer. It ensures even warming and maintains the bread’s texture. However, it’s the slowest option.
  • Toaster (if it fits): This method can achieve a crispy exterior and warm interior but can easily burn the bread or melt the filling. Watch closely and adjust the toasting level accordingly.
  • Air Fryer (3-5 minutes at 350°F): This creates a crispy crust and warm filling, similar to a fried sandwich. However, it requires an additional appliance and takes longer than microwaving.
  • Mini Waffle Maker (if it fits): This method creates a fun, waffle-like texture, but again, requires specialized equipment and may not heat the filling evenly.


Microwaving Uncrustables is quick and easy, and you’ll have a delicious snack ready in no time! Just remember to follow the instructions on the packaging and be cautious when handling the hot filling. With this simple snack, you can enjoy a tasty treat whenever you need a quick and easy snack. So, go ahead and microwave those Uncrustables with confidence, and enjoy the gooey goodness!

About Cynthia

Cynthia Odenu-Odenu is the founder of Cyanne Eats. She is an avid baker and cook of delicious delicacies. She uses this blog to share her love for different cuisines.

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