How long to roast sweet potatoes and carrots depends on the size you cut them and the temperature you use, but as a general rule, sweet potatoes and carrots roast in about 25 to 40 minutes at 425°F (220°C).
The exact roasting time can vary depending on whether you’re roasting them together or separately, how thick your chunks are, and whether you’re using a convection or standard oven.
If you’ve ever wondered how long to roast sweet potatoes and carrots so they come out tender, caramelized, and perfectly cooked, this post will walk you through everything you need to know.
In this post, we’ll cover how long to roast sweet potatoes and carrots, the best temperature for roasting them, and tips to get them crispy and flavorful every time.
How Long to Roast Sweet Potatoes and Carrots
Roasting sweet potatoes and carrots takes about 25 to 40 minutes at 425°F (220°C), depending on how you cut them.
Small cubes roast faster, usually in 25 to 30 minutes, while larger chunks or wedges need 35 to 40 minutes.
If you’re roasting sweet potatoes and carrots together on the same sheet pan, aim for 30 to 35 minutes as a safe middle ground.
Here’s a quick breakdown of the roasting times you can expect:
1. Small Cubes (1/2-inch pieces): 20 to 25 Minutes
When you cut sweet potatoes and carrots into small, half-inch cubes, they roast quickly and evenly.
At 425°F, small cubes of sweet potatoes and carrots will be tender and caramelized in about 20 to 25 minutes.
This size is perfect for adding to grain bowls, salads, or quick weeknight side dishes.
2. Medium Chunks (1-inch pieces): 30 to 35 Minutes
One-inch chunks are the sweet spot for roasting sweet potatoes and carrots.
They hold their shape, develop a nice caramelized exterior, and stay soft inside.
At 425°F, expect medium chunks to take about 30 to 35 minutes, flipping halfway through.
3. Large Chunks or Wedges: 35 to 45 Minutes
If you’re roasting large chunks or wedges of sweet potatoes and carrots, plan for 35 to 45 minutes.
Larger pieces take longer for heat to penetrate, so they need more time in the oven to become fully tender.
You can also lower the temperature to 400°F for larger pieces so the outside doesn’t burn before the inside cooks through.
Best Temperature for Roasting Sweet Potatoes and Carrots
The best temperature for roasting sweet potatoes and carrots is 425°F (220°C).
This high heat gives you that golden, caramelized exterior while keeping the inside tender and sweet.
If you prefer a slower roast with deeper flavor, you can roast sweet potatoes and carrots at 400°F (200°C) for a slightly longer time.
Just remember that the roasting time for sweet potatoes and carrots will increase by about 5 to 10 minutes if you drop the temperature.
1. Why 425°F Works So Well
At 425°F, the natural sugars in sweet potatoes and carrots begin to caramelize quickly.
This creates that rich, slightly crispy edge that makes roasted veggies so addictive.
It’s also hot enough to cook the inside thoroughly without drying them out.
2. When to Use 400°F Instead
If you’re roasting very large pieces or cooking them alongside other dishes that need lower heat, 400°F is a great option.
You’ll just need to add a few extra minutes to your roasting time for sweet potatoes and carrots.
Tips for Perfectly Roasted Sweet Potatoes and Carrots
Getting the roasting time for sweet potatoes and carrots right is only part of the equation.
How you prep and season them matters just as much as the time they spend in the oven.
Here are the best tips to make sure your sweet potatoes and carrots roast beautifully every single time.
1. Cut Them Into Even Pieces
Even pieces are the secret to roasting sweet potatoes and carrots perfectly.
If some pieces are tiny and others are huge, the small ones will burn before the large ones cook through.
Take an extra minute to cut everything roughly the same size, and your roasting time will be much more predictable.
2. Don’t Crowd the Pan
If you pile sweet potatoes and carrots too close together, they’ll steam instead of roast.
Spread them out in a single layer with a little space between each piece.
This allows hot air to circulate around them, which gives you that crispy exterior while keeping the inside tender.
3. Toss With Oil and Seasonings
A good drizzle of olive oil helps sweet potatoes and carrots roast evenly and prevents them from drying out.
Season with salt, pepper, garlic powder, smoked paprika, or fresh rosemary for extra flavor.
Toss everything together in a bowl before spreading on the baking sheet so every piece gets coated.
4. Flip Halfway Through
Flipping sweet potatoes and carrots halfway through roasting ensures they brown evenly on all sides.
Set a timer for the halfway mark of your total roasting time and give the pan a quick shake or use a spatula to turn them.
This simple step makes a big difference in the final texture.
5. Check for Doneness With a Fork
The best way to know when sweet potatoes and carrots are done is to pierce them with a fork.
If the fork slides in easily with no resistance, they’re ready.
If there’s still a bit of firmness in the center, give them another 5 minutes and check again.
So, How Long to Roast Sweet Potatoes and Carrots?
Sweet potatoes and carrots roast in about 25 to 40 minutes at 425°F (220°C), depending on how large you cut them.
Small cubes take around 20 to 25 minutes, medium chunks need 30 to 35 minutes, and large wedges can take 35 to 45 minutes.
The best way to get them perfect is to cut them into even pieces, toss them with oil and seasonings, spread them out on a single layer, and flip halfway through.
Whether you’re making a simple weeknight side dish or meal prepping for the week, knowing how long to roast sweet potatoes and carrots means you’ll always end up with tender, caramelized, delicious results.
Enjoy your roasting.