You probably have some Uncrustables sitting in your freezer and I am pretty sure you are trying to figure out if you can microwave or toast them?
In this short article, we will answer your question, as well as show you in detail what will happen if you throw Uncrustables in the microwave or toaster/toaster oven.
With that said, Let’s jump right into it.
Don’t Microwave Uncrustables: The Manufacturer Says So
Let’s make this clear, this isn’t internet paranoia. Even Smucker’s, the company that makes Uncrustables, says not to do it.
They’ve stated it plainly:
These little PB&J pockets are designed to thaw naturally at room temperature, no shortcuts, no heat, no hacks, following the same thawing process for Uncrustables.
Smucker’s doesn’t just warn against microwaving for taste reasons, it’s about safety. And yet, that hasn’t stopped people from testing the limits. From TikTok to Twitter, there’s no shortage of failed “microwave hack” attempts, and some of them ended painfully.
When You Microwave an Uncrustable, This Is What Goes Wrong
When people forget to take them out of the wrapper, things go from bad to worse, the plastic melts right into the bread, fusing with the sandwich and releasing chemicals no one wants with their PB&J. Even when unwrapped, the heat builds unevenly, leaving cold bread with lava-hot filling inside.
People online keep testing the “microwave hack,” hoping for a warm, faster Uncrustable. Instead, they’re ending up with burns, melted bread, and jelly explosions. Here’s a snapshot of how it’s going for them:
Three different people. Same mistake.
Every time someone tries to shortcut the thawing process, the results end in burns, leaks, or ruined snacks. It’s not bad luck, it’s how these sandwiches are made.
The jelly and peanut butter heat unevenly inside the sealed crust, trapping steam until it bursts. That’s why Smucker’s says not to microwave them, it’s not about texture, it’s about safety.
And this is just a snapshot. Scroll through social media and you’ll find dozens more, scorched Uncrustables, melted wrappers, and regretful snackers warning everyone else not to repeat their mistake.
So, Warning You Again! Don’t microwave Uncrustables. The internet has already done the testing, and it didn’t end well.
People Still Try Microwaving Uncrustables Anyway
Despite all the warnings, YouTube has plenty of “how to microwave Uncrustables” videos claiming to make it work.
Even here, the results won’t consistent, the outside looks fine, but the filling could be molten. It takes timing, trial, and a lot of luck to avoid a mess or a burn.
Can You Toast Uncrustables? Smucker’s Still Says No
If microwaving is the internet’s worst Uncrustables idea, toasting is the one that people defend.
Sumcker’s gives the same warning for toasters and air fryers as they do for microwaves:: “We do not recommend preparing Uncrustables® sandwiches in the toaster or air fryer.”
Smucker’s says not to toast them, but the internet didn’t listen, and honestly? The results look convincing.
That viral post from @katerstweets lays it out perfectly: a few minutes in the toaster, and the bread turns golden and crisp while the filling stays soft and warm.
The photos look straight out of a snack ad, and the replies are full of people swearing they’ll never go back to the frozen-thaw method again.
Compared to microwaving, this hack actually makes sense, no melted plastic, no exploding jelly, just a warm PB&J that crunches when you bite it. It breaks the rules, sure, but this time the rule-breakers might have a point.
Some Snacks Just Aren’t Built for Shortcuts
We get it — waiting for an Uncrustable to thaw feels like punishment. But the label says “do not heat” for a reason, and the internet’s already shown what happens when people start microwaving or toasting Uncrustables.
Still, if you’re feeling bold, go ahead, toss my advice out the window and report back in the comments. Maybe you’ll crack the code on the perfect warm PB&J… or maybe you’ll just end up cleaning jelly out of your toaster.
If you went rogue and tried microwaving/toasting an Uncrustable, report back below. Bonus points for photos of the aftermath.
