Roasted Butternut Squash and Sweet Potatoes
Even one-inch cubes on a preheated pan at 425°F: tender in the middle, golden and caramelized at the edges, with six ways to season them.
- Serves 4 to 12
- 1 hour
- One sheet pan
- 6 seasonings
Roasted butternut squash and sweet potatoes are the easiest holiday side there is: cut to the same size, spread on a hot pan with room to breathe, and they come out sweet, tender and caramelized at the edges every time.
Quick answer
For roasted butternut squash and sweet potatoes, cut both into 1-inch cubes, toss with olive oil, salt, pepper, garlic powder and thyme, and spread on a preheated sheet pan in a single layer. Roast at 425°F for 35 to 40 minutes, flipping once, until tender and deeply browned at the edges.
Roasted butternut squash and sweet potatoes with caramelized edges.
Why These Two Roast So Well Together
Butternut squash and sweet potatoes are natural partners. Both are dense, sweet and starchy, both soften at about the same pace, and both brown beautifully in a hot oven as their natural sugars caramelize.
They are different enough to be interesting, too. Squash turns silky and nutty; sweet potato goes creamy with crisp, almost candied corners. On one pan you get two textures and two shades of orange for the work of one side dish.
Same timing
Cut alike, they finish together.
Natural sweetness
No sugar needed to caramelize.
One pan
Minimal cleanup on a busy day.
Goes with everything
Turkey, chicken, beef or a grain bowl.
How to Peel and Cut Them
Even cubes in a single layer.
Microwave the squash
Two to three minutes softens the skin.
Trim both ends
A flat base keeps it steady.
Split neck from bulb
Peel and cube the neck; scoop the seeds from the bulb.
Use a sharp peeler
A Y-peeler handles squash skin best.
Cube to one inch
Smaller pieces burn; larger ones stay firm.
Match the sweet potato
Same size, or a touch smaller.
Evenness matters more than precision. Pieces of very different sizes will never be done at the same moment, so take an extra minute at the cutting board.
Roasted Butternut Squash and Sweet Potatoes Recipe
The card is set for 6 people. Tap 4, 8 or 12 and every amount updates.
Roasted Butternut Squash and Sweet Potatoes
One-inch cubes tossed in olive oil, garlic and thyme, roasted on a preheated pan at 425°F. Tap how many you are feeding and every amount updates.
Serves
Ingredients
Roasted butternut squash and sweet potatoes- 1 small (about 1½ lb)1 medium (about 2 lb)1 large (about 2¾ lb)2 medium (about 4 lb) butternut squash, peeled, seeded, in 1-inch cubes
- 1 large (about 12 oz)2 medium (about 1¼ lb)3 medium (about 1¾ lb)4 medium (about 2½ lb) sweet potatoes, peeled, in 1-inch cubes
- 2 tbsp3 tbsp¼ cup6 tbsp olive oil
- 1 tsp1½ tsp2 tsp1 tbsp kosher salt
- ½ tsp¾ tsp1 tsp1½ tsp black pepper
- ¾ tsp1 tsp1½ tsp2 tsp garlic powder
- ¾ tsp1 tsp1½ tsp2 tsp dried thyme
- 1½ tbsp2 tbsp3 tbsp¼ cup maple syrup, optional, for the last 10 minutes
- to finish fresh thyme or parsley and flaky salt
Give them room. Crowded vegetables steam; spaced vegetables brown.
Instructions
Heat the oven and the pan
Heat the oven to 425°F (220°C) with the empty sheet pan on the middle rack. A hot pan is the difference between roasting and steaming.
Soften the squash skin
Microwave the whole squash 2 to 3 minutes. It will not cook, but the skin softens so peeling is easier and safer.
Cut to one inch
Peel and seed the squash, peel the sweet potatoes and cut both into even 1-inch cubes so they finish at the same time.
Toss
Toss the cubes with the oil, salt, pepper, garlic powder and thyme until every piece is glossy. Hold the maple syrup for later.
Spread on the hot pan
Tip the vegetables onto the hot pan in a single layer with gaps between the pieces. Use two pans rather than crowding one.
Roast and flip once
Roast 20 minutes without opening the oven, flip with a stiff spatula, then roast 15 to 20 minutes more, until deeply browned at the edges and tender.
Glaze and finish
If using maple syrup, drizzle it over for the last 10 minutes. Rest 5 minutes, then finish with fresh herbs and flaky salt.
Gear for Roasting Vegetables
A heavy sheet pan and a sharp peeler make it easy.
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The Rules for Caramelized Edges
| Rule | Why it works |
|---|---|
| RulePreheat the pan | Why it worksThe cubes sear the moment they land |
| Rule425°F | Why it worksHot enough to brown before they turn mushy |
| RuleSingle layer with gaps | Why it worksSteam escapes, so the surfaces dry and brown |
| RuleEnough oil | Why it worksEvery piece should look glossy, not wet |
| RuleLeave them alone | Why it worksTwenty minutes untouched builds the crust |
| RuleFlip once | Why it worksA stiff spatula keeps the browned side intact |
| RuleSweet glazes last | Why it worksMaple and honey burn if added early |
Dark, heavy sheet pans brown faster than shiny ones. If your vegetables color too quickly, move the pan up a rack; if they are pale after 30 minutes, move it down.
Six Ways to Season Them
Same vegetables, same method, six flavors.
Amounts are for the 6-person batch. Tap one:
Herb and Garlic
The recipe as written: garlic powder and thyme, finished with fresh herbs.
Maple Cinnamon
Use 1 tsp cinnamon instead of garlic and thyme, and glaze with 2 tbsp maple syrup at the end. Add toasted pecans.
Smoky Paprika
Add 1½ tsp smoked paprika and ½ tsp cumin; finish with lime.
Curry Roasted
Toss with 2 tsp curry powder, ½ tsp cumin and a pinch of chili; finish with cilantro and lime.
Savory Parmesan
Add 1 tsp dried rosemary and scatter ¼ cup grated parmesan over for the last 5 minutes.
Hot Honey
Drizzle with 2 tbsp honey mixed with ½ tsp chili flakes in the last 10 minutes.
Make It Ahead for the Holiday Table
| Plan | How | When |
|---|---|---|
| PlanCut ahead | HowRaw cubes in a sealed bag in the fridge | WhenUp to 2 days before |
| PlanRoast ahead | HowRoast until just tender, cool, refrigerate | WhenUp to 2 days before |
| PlanReheat | HowHot sheet pan at 425°F, 10 minutes | WhenWhile the turkey rests |
| PlanHold warm | HowLoosely covered in a 200°F oven | WhenUp to 30 minutes |
| PlanFinish | HowHerbs, flaky salt and any glaze | WhenJust before serving |
Reheating on a hot pan brings the edges back to life; the microwave makes them soft. If oven space is tight, this is a good dish for the toaster oven or air fryer.
What to Serve It With
At home on any fall table.
Roast turkey
A classic Thanksgiving pairing.
Roast chicken
An easy Sunday dinner.
Beef pot roast
Sweet vegetables with rich gravy.
Grain bowls
Over quinoa or rice with tahini.
Fall salads
With greens, feta and pomegranate.
Soup
Blend leftovers with broth.
Troubleshooting
| Problem | Cause | Fix |
|---|---|---|
| ProblemSoggy, pale | CauseCrowded or cold pan | FixTwo pans; preheat them |
| ProblemBurnt outside, firm inside | CausePieces too large or oven too hot | FixCut to 1 inch; check the oven temperature |
| ProblemSticking | CauseToo little oil or flipped too soon | FixOil well; wait the full 20 minutes |
| ProblemBurnt glaze | CauseMaple added early | FixAdd in the last 10 minutes |
| ProblemUneven cooking | CauseMixed sizes | FixCut evenly |
| ProblemBland | CauseUnder-salted | FixSeason before roasting and finish with flaky salt |
Roasted Butternut Squash and Sweet Potatoes: FAQs
How do you roast butternut squash and sweet potatoes together?
Cut both into 1-inch cubes, toss with oil and seasoning, spread on a preheated sheet pan in a single layer and roast at 425°F for 35 to 40 minutes, flipping once.
Do butternut squash and sweet potatoes cook at the same rate?
Close enough when they are cut to the same size. Sweet potato is slightly denser, so keep its cubes a touch smaller if you like.
What temperature is best?
425°F. Lower temperatures cook the vegetables through before the edges brown.
Why are my roasted vegetables soggy?
The pan was crowded or cold. Leave gaps between the pieces, preheat the pan and use two pans for a big batch.
Should I peel butternut squash before roasting?
For cubes, yes. The skin is edible but stays chewy.
Do I need to peel the sweet potatoes?
No. Scrubbed skins roast up pleasantly crisp; peel them for a smoother, more even look.
Can I use frozen or pre-cut squash?
Pre-cut fresh squash works perfectly. Frozen squash holds more water; roast it from frozen on a very hot pan and expect softer edges.
When should I add maple syrup or honey?
In the last 10 minutes. Added at the start, the sugar burns before the vegetables are tender.
How do I make a savory version?
Skip the maple and use garlic powder, thyme, rosemary and a little smoked paprika, then finish with parmesan.
How do I make curry roasted squash and sweet potatoes?
Toss with 2 teaspoons curry powder, ½ teaspoon cumin and a pinch of chili, and finish with lime and cilantro.
Can I make them ahead for Thanksgiving?
Yes. Roast until just tender, cool and refrigerate up to 2 days, then reheat on a hot sheet pan at 425°F for 10 minutes.
Can I cut the vegetables the day before?
Yes. Keep the raw cubes in a sealed container or bag in the fridge for up to 2 days.
How do I store leftovers?
In a sealed container in the refrigerator for up to 4 days.
Can I roast them in an air fryer?
Yes, in batches at 390°F for 14 to 18 minutes, shaking the basket twice.
More Roasted Vegetables and Sides
Easy pans for the holiday table.
Thanksgiving Roasted Vegetables
A full tray for the feast. See the recipe → SideItalian Roasted Vegetables
Herby and colorful. See the recipe → SideMashed Sweet Potato Recipes
Creamy and comforting. See the recipes → SideBaked Sweet Potato Recipes
Simple and satisfying. See the recipes →Hot pan, one layer, flip once: that is the whole secret.
Pin these roasted butternut squash and sweet potatoes for an easy holiday side.