No, you shouldn’t microwave a Dunkin’ cup. Dunkin’s hot cups are paper with a thin plastic lining, and that lining starts to soften around 176°F, well within microwave range, which can weaken the cup and cause leaks or burns. Pour the coffee into a mug instead.
If you’ve ever grabbed a Dunkin’ coffee, let it go cold, and thought about tossing the whole cup in the microwave to save a dish, I get the instinct. It’s one less thing to wash.
But it’s worth the extra ten seconds to pour it into something else first. Below is what’s actually going on with the cup, and what I’d do instead.
Key Takeaways
- Dunkin’s hot cups are paper with a thin polyethylene lining, and that lining isn’t rated for microwave heat.
- Dunkin’ finished switching every location over from foam to paper cups back in 2020, so today’s cups are always paper-lined, never foam.
- The plastic lining starts to soften around 176°F, which a microwave can easily exceed, risking leaks or a cup that buckles while it’s full of hot liquid.
- The fix is simple: pour the coffee into a mug or glass measuring cup before microwaving, since Dunkin’ doesn’t sell a microwave-safe version of its to-go cup.
Table of Contents
Can You Microwave Dunkin Cups?
No. Dunkin’s cups are paper with a plastic lining on the inside, and that lining isn’t rated for microwave heat.
This used to be a slightly more complicated answer, since Dunkin’ cups were foam for years and older locations sometimes still had foam in circulation. That’s no longer the case. Dunkin’ finished switching every location over to paper cups back in 2020, so if you’re holding a Dunkin’ cup today, it’s paper with a plastic liner, not foam.
Either way, the answer is the same: pour it into something else before it goes in the microwave.
What Are Dunkin Cups Actually Made Of?
Dunkin’s current hot cups are double-walled paper with a thin polyethylene lining on the inside. That lining is what keeps your coffee from soaking straight through the paper, and it’s the same basic approach most coffee chains use.
That plastic lining is fine for what it’s built for, holding a hot drink for the time it takes you to finish it. It’s not built to sit inside a microwave getting blasted with heat well past what it was designed to handle.
What Happens If You Microwave a Dunkin Cup?
The plastic lining inside the cup starts to soften around 176°F, and a microwave can easily push liquid past that. Once the lining softens, the structure of the cup weakens right where it’s holding your coffee in.
In practice, that means a cup that’s more likely to leak, buckle, or fail while you’re pulling it out of the microwave, right when it’s full of hot liquid and you’re least prepared for it to give out. That’s the real risk, a structural one, not the cup catching fire.
It’s not worth testing to save a dish.
What Should You Use Instead?
Pour the coffee into a mug or a glass measuring cup and microwave that instead. It takes ten seconds and skips the whole problem.
Dunkin’ doesn’t sell a microwave-safe version of their to-go cup, so there’s no branded product to point you toward here. A generic microwave-safe travel mug works well for reheating coffee on repeat, it just won’t have the Dunkin’ logo on it.
A plain ceramic mug from your cabinet does the exact same job for free, as long as it doesn’t have any metallic trim.
My Take
I get why the microwave-the-whole-cup instinct is tempting. You’ve already got the cup in hand and pouring feels like an extra step for lukewarm coffee.
But the pour takes ten seconds, and it means you’re not betting on a paper cup holding together under heat it was never built for. Grab a mug, pour it in, and reheat that instead.
FAQs
Can you microwave a Dunkin’ hot cup?
No. Dunkin’s hot cups are paper with a thin polyethylene lining that isn’t rated for microwave heat. Pour the coffee into a mug or glass measuring cup instead.
Does Dunkin’ still use foam cups?
No. Dunkin’ finished switching every location over to paper cups with a plastic lining back in 2020, so any Dunkin’ cup you get today is paper, not foam.
What happens if you microwave a Dunkin’ cup?
The plastic lining inside the cup starts to soften around 176°F, which a microwave can easily exceed. That weakens the cup and makes it more likely to leak or buckle while it’s full of hot liquid.
Cynthia Odenu-Odenu is the founder of Cyanne Eats. A registered nurse with a passion for food, she brings the same attention to detail from her professional life into the kitchen. From chain restaurant rankings to grocery finds and easy recipes, Cynthia covers it all and helps everyday food lovers eat better and spend smarter.