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How long to roast celery root depends on the size of your chunks and your oven temperature, but most recipes call for about 25 to 40 minutes at 425°F.
If you’ve been wondering how long to roast celery root because yours always comes out either mushy or rock-hard, you’re in the right place.
When you roast celery root properly, it turns golden brown on the outside, tender on the inside, and develops a subtly sweet, nutty flavor that’s honestly addictive.
In this post, we’ll cover exactly how long to roast celery root, the best temperature for roasting celery root, and a few easy tricks to get it perfect every time.
Let’s dive in.
How Long to Roast Celery Root at 425°F
When you roast celery root at 425°F, the answer to how long to roast celery root is usually 25 to 40 minutes.
That said, the exact roasting time for celery root depends on a few things worth knowing before you slide that tray into the oven.
1. The Size of Your Pieces Matters Most
How long to roast celery root is mostly about how you cut it.
If you cut celery root into 1-inch cubes, expect about 30 to 35 minutes of roasting.
Smaller pieces, around half an inch, will roast celery root in as little as 20 to 25 minutes.
Larger wedges can take 40 to 45 minutes, so keep an eye on them.
The good news is that the roasting time for celery root stays fairly predictable as long as your pieces are roughly the same size.
2. The Temperature You Choose
Roasting celery root at 425°F gives you that caramelized exterior and creamy interior in about 30 minutes.
If you drop the heat to 400°F, plan on roasting celery root for 35 to 45 minutes instead.
A hotter oven, around 450°F, can roast celery root in 20 to 25 minutes, but you’ll need to flip the pieces halfway through so they don’t burn.
3. Don’t Crowd the Pan
This isn’t about time, but it directly affects how long to roast celery root.
If your pieces are piled on top of each other, they’ll steam instead of roast, and you’ll end up roasting celery root for way longer than expected.
Spread them in a single layer with a little breathing room.
Best Way to Roast Celery Root So It’s Never Mushy
Knowing how long to roast celery root is half the battle, but technique is the other half.
Here’s how to roast celery root so it comes out tender but never mushy or bland.
1. Peel It Properly
Celery root has a thick, knobby skin that’s tough and fibrous.
Peel it with a sharp knife rather than a vegetable peeler, cutting away all the brown exterior until you reach the creamy white flesh.
If you skip this step, no amount of roasting celery root will make those bits pleasant to eat.
2. Toss With Oil and Season Well
Coat your cubes in olive oil, then season with salt, pepper, and maybe a pinch of thyme or smoked paprika.
The oil helps the celery root roast evenly and brown nicely.
3. Preheat the Oven Fully
A hot oven is key when you roast celery root.
Let your oven preheat for at least 15 minutes so the celery root starts roasting the moment it hits the pan.
4. Flip Halfway Through
Flip the pieces at the halfway mark of your roasting time for celery root.
This ensures every side gets that golden, caramelized finish.
How to Tell When Celery Root Is Done Roasting
The best way to confirm how long to roast celery root is to test it, not just watch the clock.
Pierce a piece with a fork or paring knife.
If it slides in with just a little resistance, your celery root is roasted perfectly.
If it goes in like butter, you’ve roasted celery root a touch too long.
If there’s a lot of resistance, keep roasting celery root for another 5 minutes and check again.
You’ll also notice the edges turning deep golden brown, which is exactly what you want.
So, How Long to Roast Celery Root?
So, how long to roast celery root?
You’ll want to roast celery root for about 25 to 40 minutes at 425°F, depending on the size of your pieces.
Small cubes roast faster while larger wedges take a bit longer.
Toss them in oil, spread them out, flip halfway, and test with a fork near the end.
Once you nail how long to roast celery root, this humble vegetable becomes one of the easiest and most delicious sides you can make.