Roasting carrots and potatoes takes about 25 to 35 minutes in a 425°F (220°C) oven, depending on how you cut them.
If you’ve been wondering how long to roast carrots and potatoes together, the good news is that both veggies love the same high heat.
The trick is cutting them to similar sizes so they finish roasting at the same time.
In this post, we’ll break down exactly how long it takes to roast carrots and potatoes, plus the temps, tips, and tricks that get them perfectly tender with crispy edges.
Let’s dive in.
How Long Does It Take to Roast Carrots and Potatoes?
When you roast carrots and potatoes together, the total cook time usually lands between 25 and 35 minutes at 425°F.
That range shifts a bit depending on a few key factors, so let’s look at what changes the timing.
1. The Size of Your Cuts Matters Most
The single biggest factor in how long it takes to roast carrots and potatoes is how big you cut them.
Chunky one-inch cubes of potato need closer to 35 minutes.
Thin carrot coins or half-inch potato wedges can be done in about 25 minutes.
If you want both veggies done at the same time, cut them to match each other.
2. Oven Temperature Sets the Pace
Most recipes roast carrots and potatoes at 400°F to 425°F (200°C to 220°C).
At 425°F, you’ll hit that 25 to 35 minute window.
Drop the heat to 400°F and you’re looking at 35 to 45 minutes instead.
Higher heat gives you faster cooking and crispier edges, which is why 425°F is the sweet spot.
3. Potato Type Changes the Time
Not all potatoes roast the same way, and that affects how long to roast carrots and potatoes.
Russet potatoes are starchy and soften quickly, often in 25 to 30 minutes.
Waxy potatoes like red or Yukon Gold hold their shape and may need the full 35 minutes.
Either way, both types roast beautifully alongside carrots.
4. Fresh vs. Frozen Carrots
Fresh carrots take the standard 25 to 35 minutes to roast.
Frozen carrots are already blanched, so they cook faster and can turn mushy if you’re not careful.
If you’re roasting frozen carrots and potatoes, add the carrots in the last 15 minutes.
That way, when you roast carrots and potatoes together, nothing overcooks.
How to Roast Carrots and Potatoes Perfectly
Knowing how long to roast carrots and potatoes is half the battle, but technique gets you the rest of the way.
Here’s how to nail it every single time.
1. Cut Everything to the Same Size
Aim for one-inch pieces across the board.
Uniform pieces roast carrots and potatoes evenly, so nothing burns while something else stays raw.
2. Toss With Oil and Season Well
Coat everything in two to three tablespoons of olive oil.
Season with salt, pepper, garlic powder, and rosemary or thyme.
Oil helps the veggies roast carrots and potatoes to a golden, crispy finish instead of steaming.
3. Spread Them in a Single Layer
Crowding the pan steams the veggies instead of roasting them.
Use a large sheet pan and give everything room to breathe.
This one tip can shave minutes off how long it takes to roast carrots and potatoes because heat circulates better.
4. Flip Halfway Through
At the 15-minute mark, stir everything around.
This ensures both sides of your carrots and potatoes get that caramelized, crispy edge.
5. Check for Doneness
Your roast carrots and potatoes are ready when a fork slides in easily.
Carrots should be tender with a little bite, and potatoes should be creamy inside with browned edges.
If they’re not there yet, give them another 5 minutes and check again.
Tips for Roasting Carrots and Potatoes Together
A few extra tricks make the whole process smoother.
1. Parboil Potatoes for Faster Roasting
If you’re short on time, boil potato chunks for 5 minutes first.
This cuts the roasting time for carrots and potatoes down to about 20 minutes.
2. Add Carrots Later if They’re Thin
Baby carrots or thin slices cook fast, so toss them in 10 minutes after the potatoes start.
That way, when you roast carrots and potatoes, both come out perfectly tender.
3. Don’t Skip the Preheat
A fully preheated oven is key to crispy results.
If your oven isn’t hot enough, roast carrots and potatoes will take longer and steam instead of brown.
4. Use Parchment for Easy Cleanup
Parchment paper keeps veggies from sticking and makes cleanup a breeze.
Just don’t crowd the paper, or the carrots and potatoes will steam rather than roast.
So, How Long Does It Take to Roast Carrots and Potatoes?
Roasting carrots and potatoes takes about 25 to 35 minutes at 425°F.
Cut them to even one-inch pieces, toss with oil and seasonings, spread them in a single layer, and flip halfway through.
That’s really all it takes to roast carrots and potatoes with crispy edges and tender centers.
Whether you’re making a weeknight side or a holiday spread, now you know exactly how long to roast carrots and potatoes for perfect results every time.