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You can roast potatoes and carrots in the oven by tossing them in oil, seasoning them well, and spreading them on a baking sheet at around 425°F.
It’s one of the easiest side dishes you can make, and it works with almost any main course.
Whether you’re making a Sunday roast or just want a healthy weeknight side, roasted potatoes and carrots deliver big flavor with very little effort.
In this post, we’ll cover exactly how to roast potatoes and carrots in the oven, including prep, seasoning, timing, and tips for getting them perfectly crispy.
Let’s get to it.
How Do You Roast Potatoes and Carrots in the Oven?
Roasting potatoes and carrots in the oven is simple once you know the right steps.
The process comes down to three things: proper prep, high heat, and giving them enough space on the pan.
Here’s how to do it right.
1. Preheat the Oven to 425°F
The first step in how do you roast potatoes and carrots in the oven is getting the temperature right.
Preheat your oven to 425°F (220°C) for the best results.
This high heat is what gives roasted potatoes and carrots that golden, crispy exterior while keeping the insides tender.
If you go too low, you’ll end up steaming them instead of roasting.
2. Cut Them Into Even Pieces
When you roast potatoes and carrots, size matters.
Cut your potatoes into roughly 1-inch chunks and your carrots into similar-sized pieces.
Even sizing helps everything cook at the same rate so nothing burns while something else stays raw.
If your carrots are thin, just halve them lengthwise.
If they’re thick, cut them into sticks or rounds.
3. Toss With Oil and Seasonings
To roast potatoes and carrots properly, you need a good coating of oil.
Use about 2 to 3 tablespoons of olive oil, avocado oil, or any neutral oil you like.
Then season generously with salt, black pepper, garlic powder, and dried herbs like rosemary or thyme.
Toss everything in a large bowl until each piece is evenly coated.
This step is what builds the flavor foundation when you roast potatoes and carrots in the oven.
4. Spread Them in a Single Layer
Crowding the pan is the number one mistake people make when they roast potatoes and carrots.
Spread the pieces in a single layer on a large baking sheet.
If they’re touching or overlapping, they’ll steam instead of roast.
Use two pans if you need to, because giving them space is key to crispy edges.
Tips for Perfectly Roasted Potatoes and Carrots
If you want to know how to roast potatoes and carrots in the oven like a pro, these tips will help.
They’re small adjustments that make a big difference.
1. Parboil the Potatoes First
For extra crispy roasted potatoes and carrots, parboil the potato chunks for about 5 to 7 minutes before roasting.
Drain them well and let them steam dry for a minute.
This step roughs up the surface and helps them crisp beautifully in the oven.
Carrots don’t need parboiling, so just add them to the pan raw.
2. Use a Hot Baking Sheet
Preheating your baking sheet in the oven for 5 minutes before adding the vegetables gives you a head start on crisping.
When you roast potatoes and carrots on a hot surface, the bottoms get golden right away.
Just be careful when you spread them out so you don’t burn yourself.
3. Flip Them Halfway Through
About 20 minutes into roasting, take the pan out and flip the pieces with a spatula.
This ensures even browning on all sides when you roast potatoes and carrots in the oven.
It also helps them cook evenly if your oven has hot spots.
4. Add Carrots Later If They’re Thin
Potatoes usually take longer than carrots.
If your carrots are on the thinner side, you can roast the potatoes for 15 minutes first, then add the carrots.
This way, both finish at the same time when you roast potatoes and carrots together.
How Long Do You Roast Potatoes and Carrots in the Oven?
The total roasting time is usually 35 to 45 minutes at 425°F.
Potatoes need about 40 minutes, while carrots take 25 to 35 minutes depending on thickness.
Start checking at the 30-minute mark.
They’re done when they’re fork-tender inside and golden brown on the outside.
If you want them crispier, give them another 5 to 10 minutes.
1. Signs They’re Ready
When you roast potatoes and carrots, look for browned edges and a slight caramelization.
A fork should slide in easily with just a little resistance.
If they look pale and soft, they need more time.
2. Don’t Overcrowd or Overcook
Overcrowding leads to soggy results, and overcooking turns them mushy.
Keep an eye on them during the last 10 minutes.
The goal is tender inside and crispy outside when you roast potatoes and carrots in the oven.
So, How Do You Roast Potatoes and Carrots in the Oven?
You roast potatoes and carrots in the oven by cutting them evenly, tossing them in oil and seasonings, spreading them on a baking sheet, and roasting at 425°F for 35 to 45 minutes.
Flip them halfway through and give them space so they crisp instead of steam.
With these simple steps, you’ll get perfectly roasted potatoes and carrots every single time.
Enjoy your side dish.