How long to roast celery root depends on the size of your pieces and your oven temperature, but most recipes call for about 25 to 45 minutes at 400°F (200°C).
Celery root, also called celeriac, is a knobby, earthy vegetable that roasts into something beautifully sweet and tender.
If you’ve been wondering how long to roast celery root so it comes out perfectly golden and soft, you’re in the right place.
In this post, we’ll cover exactly how long to roast celery root, how to prep it, and the best tips for getting that caramelized finish every single time.
Let’s get into it.
How Long to Roast Celery Root at 400°F
When you roast celery root at 400°F, the timing depends mostly on how you cut it.
Here’s a simple breakdown so you know how long to roast celery root no matter the shape.
1. Cubed Celery Root: 25 to 35 Minutes
If you cut your celery root into one-inch cubes, you’ll roast it for about 25 to 35 minutes.
This is the most common way to roast celery root because the cubes cook evenly and get crisp edges.
Toss them in oil, spread them on a sheet pan, and flip halfway through.
You’ll know they’re done when a fork slides in with almost no resistance.
2. Wedges or Steaks: 35 to 45 Minutes
Thicker cuts like wedges or half-inch steaks take a bit longer.
Roast celery root wedges for 35 to 45 minutes, flipping once at the halfway mark.
The larger surface area means more caramelization, which is exactly what you want.
Just keep an eye on them so the thinner edges don’t burn.
3. Whole Celery Root: 1.5 to 2 Hours
Can you roast celery root whole?
Yes, you can, but it takes much longer — usually 1.5 to 2 hours depending on size.
You’ll want to pierce it with a fork first, rub it with oil and salt, and wrap it in foil.
Then roast until a knife goes in easily all the way to the center.
This method gives you a creamy, scoopable interior that’s great for mashing.
How to Prep Celery Root for Roasting
Knowing how long to roast celery root is only half the battle.
The prep matters just as much, so here’s how to get it right.
1. Peel It Thoroughly
Celery root has a tough, hairy outer skin that you definitely don’t want to eat.
Use a sharp knife to slice off the top and bottom, then cut down the sides to remove the skin.
A vegetable peeler works too, but a knife handles the knobby parts better.
2. Cut It into Even Pieces
Uneven pieces mean uneven roasting.
Aim for cubes or wedges that are all roughly the same size so everything finishes at the same time.
This is the simplest way to control how long to roast celery root.
3. Toss with Oil and Seasoning
Coat your celery root pieces in olive oil, salt, and pepper.
You can also add garlic powder, thyme, rosemary, or smoked paprika for extra flavor.
Don’t crowd the pan — give everything room to breathe so it roasts instead of steams.
4. Preheat and Use the Right Pan
Always preheat your oven fully before roasting celery root.
A rimmed sheet pan works best because it lets heat circulate around every piece.
For extra crispiness, preheat the pan itself before adding the vegetables.
Tips for Perfectly Roasted Celery Root
Here are a few more pointers to help you nail the timing and texture.
1. Flip Halfway Through
Flipping your celery root halfway through roasting ensures even browning on all sides.
Set a timer for half of your total roast time and give the pan a quick shake or use a spatula.
2. Watch for Golden Edges
The best visual cue for doneness is deep golden-brown edges.
If your celery root looks pale, it probably needs a few more minutes.
3. Adjust for Your Oven
Every oven runs a little differently, so how long to roast celery root can vary by 5 to 10 minutes.
Start checking at the lower end of the time range and add more as needed.
4. Don’t Skip the Rest
Let your roasted celery root sit for a few minutes after it comes out of the oven.
The residual heat finishes the cooking and the flavors settle beautifully.
So, How Long to Roast Celery Root?
How long to roast celery root comes down to about 25 to 45 minutes for cut pieces at 400°F, or up to 2 hours if you’re roasting it whole.
Cut it evenly, toss it in oil, and keep an eye on those golden edges.
Now that you know how long to roast celery root, you can serve it as a side, mash it, or toss it into salads and grain bowls.
Enjoy your roasting.