You can roast carrots and potatoes in the oven at 425°F (220°C) for about 25 to 35 minutes, depending on how you cut them.
That’s the quick answer, but there’s a little more to it if you want them perfectly tender inside with crispy, golden edges outside.
Knowing exactly how long to roast carrots and potatoes comes down to a few simple factors like size, temperature, and whether you’re roasting them together or separately.
In this post, we’ll walk through how long to roast carrots and potatoes, the best temps and times, and a few tips so they come out great every single time.
How Long to Roast Carrots and Potatoes Together
Roasting carrots and potatoes together is totally doable, and the timing works out well because both veggies have similar cook times when cut to the same size.
Here’s how long to roast carrots and potatoes together at a few common temperatures:
1. At 425°F (220°C)
At 425°F, roast carrots and potatoes for about 25 to 35 minutes.
This is the sweet spot for most home cooks who want a crispy exterior and a soft, fluffy interior.
Cut your potatoes into 1-inch cubes and your carrots into 1-inch chunks so they finish at the same time.
2. At 400°F (200°C)
At 400°F, plan for 35 to 45 minutes.
The slightly lower heat gives you a bit more forgiveness if you’re multitasking in the kitchen.
Just toss everything halfway through so all sides get that nice roasted color.
3. At 450°F (230°C)
If you’re in a hurry, 450°F will get the job done in about 20 to 30 minutes.
Keep a close eye on them though, because higher heat can char the edges fast.
That said, a little char is exactly what makes roasted carrots and potatoes so delicious.
Factors That Affect Roasting Time
Even with a set temperature, a few things can change how long to roast carrots and potatoes in your oven.
Let’s break down what matters most.
1. Size of the Cut
The smaller you cut your carrots and potatoes, the faster they roast.
Baby carrots and fingerling potatoes can be done in as little as 20 minutes.
Meanwhile, large wedges or whole carrots can take 45 minutes or more.
2. Type of Potato
Russet potatoes get creamy inside and crisp outside, and they usually roast in 30 to 40 minutes.
Waxy potatoes like red or Yukon Gold hold their shape better and can take a few minutes longer.
Whichever you choose, aim for even pieces so everything cooks at the same rate.
3. Fresh vs. Frozen Carrots
Fresh carrots roast in the standard 25 to 35 minutes at 425°F.
Frozen carrots release extra moisture, so they may need 10 extra minutes and a hotter oven to crisp up.
If you’re using frozen, pat them dry before roasting to help them brown.
4. Oven Accuracy
Not all ovens run true to their set temperature.
An oven thermometer is a cheap tool that helps you know exactly how long to roast carrots and potatoes without guessing.
If your oven runs hot, shave a few minutes off the time, and if it runs cool, add a few.
Tips for Perfect Roasted Carrots and Potatoes
Timing is only half the battle, so here are a few tricks to get the best results.
1. Dry Them Well
Moisture is the enemy of crispiness.
Pat your carrots and potatoes completely dry before tossing them in oil.
This one step makes a huge difference in how crispy they turn out.
2. Don’t Crowd the Pan
Spread everything in a single layer with a little space between each piece.
If they’re piled up, they’ll steam instead of roast, and you’ll lose that golden crust.
Use two sheet pans if you need to.
3. Use Enough Oil and Seasoning
A good drizzle of olive oil helps them brown and keeps them from sticking.
Season with salt, pepper, garlic powder, or rosemary for extra flavor.
Toss everything so each piece is evenly coated before they hit the oven.
4. Flip Halfway Through
Around the 15-minute mark, give everything a stir or flip with a spatula.
This helps both sides get that nice roasted finish.
It also lets you check on how fast they’re cooking.
5. Check for Doneness
The best way to know how long to roast carrots and potatoes is to test them.
A fork or knife should slide in easily with just a little resistance.
If they’re tender inside and browned outside, they’re ready.
So, How Long Do You Roast Carrots and Potatoes?
You roast carrots and potatoes for about 25 to 35 minutes at 425°F, or 35 to 45 minutes at 400°F, until they’re tender inside and crispy outside.
Cut them to similar sizes, dry them well, and give them room to breathe on the pan.
Now you know exactly how long to roast carrots and potatoes, so go preheat that oven and enjoy a perfectly golden batch tonight.