Potatoes and carrots take about 25 to 35 minutes in the oven at 425°F when you cut them into bite-sized pieces and roast them on a single layer.
That’s the short answer, and honestly, it’s the one most people are looking for when they’re standing in the kitchen with a cutting board full of veggies and an empty sheet pan.
But how long potatoes and carrots take in the oven depends on a few things, like how big you chop them, what temperature you set, and whether you’re roasting them together or separately.
If you’ve ever wondered how long to roast potatoes and carrots so they come out crispy on the outside and tender on the inside, you’re in the right place.
In this post, we’ll break down exactly how long potatoes and carrots take in the oven, plus a few tips to get them perfectly golden every single time.
Let’s get roasting.
How Long Do Potatoes and Carrots Take in the Oven?
When you roast potatoes and carrots together, the total time in the oven usually lands between 25 and 35 minutes at 425°F.
That said, the exact time depends on a handful of factors, and knowing them will help you nail that sweet spot every time.
Let’s look at what really determines how long potatoes and carrots take in the oven.
1. The Size of Your Cuts Matters Most
The single biggest factor in how long potatoes and carrots take in the oven is how you cut them.
If you chop them into half-inch cubes, they’ll roast in about 25 minutes.
If you leave bigger chunks, like one-inch pieces, plan for closer to 35 minutes.
The goal is to keep all your pieces roughly the same size so they cook evenly.
That way, no lonely carrot burns while a chunky potato sits there raw in the middle.
2. Oven Temperature Sets the Pace
Most recipes call for roasting potatoes and carrots at 400°F to 425°F.
At 425°F, potatoes and carrots take about 25 to 35 minutes.
Drop the temperature to 400°F, and you’re looking at 35 to 45 minutes instead.
Lower heat means a slower roast, but it also gives you a bit more wiggle room if you’re worried about burning the edges.
3. Potatoes and Carrots Cook at Different Speeds
Here’s the thing nobody tells you: carrots actually soften faster than potatoes in the oven.
So if you’re roasting them together, cut the carrots into slightly bigger pieces than the potatoes.
That way, both finish at around the same time, and you’re not fishing out mushy carrots while the potatoes are still hard.
4. Parboiling Can Cut the Time Down
If you’re short on time, you can parboil the potatoes for about 5 to 7 minutes before roasting.
This jumpstarts the cooking process, so how long potatoes and carrots take in the oven drops to around 20 minutes.
Just drain them well and pat them dry so they still crisp up nicely.
How to Roast Potatoes and Carrots Perfectly
Knowing how long to roast potatoes and carrots is only half the battle.
Here’s how to get them crispy, golden, and full of flavor.
1. Preheat Your Oven Properly
Always preheat to 425°F before the veggies go in.
A hot oven gives you that immediate sizzle that starts the crisping process right away.
2. Don’t Crowd the Pan
Spread potatoes and carrots 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 end up with soggy veggies.
Use two sheet pans if you have to.
3. Toss in Oil and Season Well
Coat everything in a couple tablespoons of olive oil, then hit it with salt, pepper, garlic powder, and maybe some rosemary or thyme.
The oil helps them brown, and the seasoning makes every bite worth it.
4. Flip Halfway Through
Around the 15-minute mark, give everything a quick stir or flip with a spatula.
This ensures even browning on all sides, so how long potatoes and carrots take in the oven stays consistent across the whole batch.
How to Tell When They’re Done
The best way to know how long potatoes and carrots take in the oven is to test them, not just watch the clock.
Pierce a potato with a fork.
If it slides in easily with no resistance, they’re done.
Carrots should be tender but not mushy, and the edges of both should look browned and slightly crispy.
If they’re not quite there, give them another 5 minutes and check again.
So, How Long Do Potatoes and Carrots Take in the Oven?
Potatoes and carrots take about 25 to 35 minutes in the oven at 425°F when cut into even, bite-sized pieces.
Carrots soften a little faster than potatoes, so cut them slightly bigger, and always roast in a single layer for the best texture.
Whether you’re making a weeknight side dish or a holiday spread, now you know exactly how long to roast potatoes and carrots so they come out perfect every time.
Happy roasting.