Sheet Pan Roasted Fall Vegetables

Name: Sheet Pan Roasted Fall Vegetables
Prep time: 15 min
Cook time: 35 min
Total time: 55 min
Ingredients: 1 lb butternut squash (peeled and seeded, cut into 3/4-inch cubes); 12 oz Brussels sprouts (trimmed and halved); 2 carrots (medium, cut into 1/2-inch pieces); 1 red onion (small, cut into 1-inch wedges); 3 tbsp olive oil; 0.75 tsp kosher salt; 0.25 tsp black pepper; 1 tsp dried thyme

The first thing I notice when this pan comes out of the oven is how the Brussels sprouts have browned at their cut sides while the squash edges have picked…

By Willow • October 14, 2026 • Reading time: 8 min

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The first thing I notice when this pan comes out of the oven is how the Brussels sprouts have browned at their cut sides while the squash edges have picked up a little color. That mix of tender centers and browned edges is what makes Sheet Pan Roasted Fall Vegetables more satisfying than a tray of vegetables that’s simply gone soft. The different shapes and sizes give every bite a little variety, and the dried thyme brings the whole pan together without taking over.

I toss everything in a large bowl before it goes onto the pan. That gives the olive oil and seasoning a chance to coat the vegetables evenly, instead of leaving some pieces bare and others heavily seasoned. Once they’re spread out, the oven does the rest of the work; one stir halfway through helps them brown on more than one side. The vegetables come out tender, savory, and ready to serve straight from the pan.

Sheet Pan Roasted Fall Vegetables golden browned tender

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Kitchen Note

Let the vegetables rest on the pan for 5 minutes before serving. Their edges are delicate right out of the oven, and that short pause makes them easier to lift without crushing the softer pieces.

Save these roasted fall vegetables for a colorful side with browned edges and tender centers.

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Why These Vegetables Need Different Cuts on One Pan

Uniform pieces aren’t the goal here. Each vegetable gets a cut that suits its shape: the squash becomes cubes, the carrots smaller pieces, the onion stays in broad wedges, and the Brussels sprouts are halved. Those cut sizes help the vegetables cook through while still holding their own texture. Smaller carrot pieces have more exposed surface than a whole carrot would, while the halved sprouts have a flat side that can brown against the pan.

The onion wedges are larger than the carrot pieces for a reason, too. They soften and sweeten as they roast, but a wedge keeps more structure than thin slices would. Cut the squash into pieces close to the same size as one another; a mix of tiny and oversized cubes means the small ones can turn soft before the large ones are tender. Once everything is cut, leave a little room between pieces on the pan. A crowded layer holds onto moisture, and the vegetables will soften before their edges have a chance to brown.

What Each Vegetable Brings to This Roasted Fall Mix

Sheet Pan Roasted Fall Vegetables colorful browned edges

Butternut squash — Its mild sweetness gives the tray a soft, creamy bite. A peeled, seeded squash is convenient to handle; if buying pre-cut cubes, look for pieces that are similar in size and haven’t dried out at the edges.
Brussels sprouts — Their savory, slightly nutty flavor balances the sweeter vegetables. Choose firm sprouts with compact green leaves, trim the stem ends, and halve them so the cut surfaces can brown.
Carrots — They bring a familiar sweetness and a firmer texture. Regular carrots are a good choice here; parsnips also roast well if cut into the same 1/2-inch pieces, with a more earthy, peppery flavor.
Red onion — The wedges turn sweeter and more mellow in the oven while keeping enough shape to stand out on the plate. Pick a firm onion with dry skin; there’s no need to seek out a specialty variety.
Olive oil — It coats the vegetables and helps their surfaces brown. An everyday olive oil works well; avocado oil is a neutral substitute if that’s what you keep on hand.
Dried thyme — Dried leaves are easy to distribute through the bowl and give the vegetables a woodsy note. Fresh thyme can also be used; strip the leaves from the stems before tossing them with the vegetables.

How to Roast the Vegetables Until Tender, Not Steamed

Heat the oven and prepare the pan

Heat the oven to 425°F and line an 18×13-inch rimmed sheet pan with parchment paper. Getting the oven hot before the vegetables go in helps them begin roasting right away. The rim keeps pieces from sliding off when you stir them. Have the pan ready before you toss the vegetables so they can go straight onto it.

Coat the vegetables in the bowl

Put the squash, Brussels sprouts, carrots, red onion, olive oil, kosher salt, black pepper, and dried thyme in a large bowl. Toss until the vegetables look lightly coated and the thyme is spread throughout, rather than sitting in a clump. Transfer everything to the prepared pan and spread it in a single layer. If pieces overlap heavily, use the full surface of the pan to give them more space.

Roast and stir once

Roast for 25 to 35 minutes, stirring once halfway through. The vegetables are ready when they’re tender and browned at the edges; don’t rely on color alone if a larger squash piece still feels firm. After stirring, spread the vegetables back out so they have contact with the hot pan. Start checking toward the earlier end of the time range, since the size of the pieces and your oven can affect how quickly they brown.

Give the pan a brief rest

Take the pan out when the vegetables are tender and browned, then let them rest on the pan for 5 minutes before serving. There’s no need to transfer them to a bowl while they’re piping hot. After the rest, serve them warm as a side dish or add them to a plate alongside your main course.

Two Easy Ways to Change the Vegetables or Their Flavor

Swap the squash for sweet potato

Use peeled sweet potato in place of the butternut squash and cut it into 3/4-inch cubes. It roasts into a similarly tender bite, with a slightly deeper sweetness and a less creamy texture.

Choose yellow onion for a gentler flavor

Replace the red onion with yellow onion and cut it into the same 1-inch wedges. It still softens and browns in the oven, but its flavor is less fruity and a little more savory.

Storage and Reheating

Refrigerator: Store leftovers in an airtight container for 3 to 4 days. The vegetables soften as they sit.
Freezer: Freeze cooled vegetables in an airtight container for up to 3 months. They’ll be softer after thawing, so expect less distinct edges.
Reheating: Spread leftovers on a sheet pan and warm them in a 400°F oven until heated through, about 8 to 10 minutes. Avoid piling them in a deep dish, which traps steam and softens them further.

Questions That Come Up When Roasting This Vegetable Mix

Can I cut the vegetables ahead of time?+

Yes. Cut the vegetables the day before and keep them covered in the refrigerator; store the onion separately so its smell doesn’t carry into the other vegetables. Toss everything with the oil and seasonings just before roasting.

Can I use frozen Brussels sprouts?+

Fresh Brussels sprouts are the better choice for this pan. Frozen sprouts hold extra moisture and won’t brown as reliably alongside the fresh squash, carrots, and onion. Use fresh sprouts, trim them, and halve them before tossing.

Can I leave out the red onion?+

Yes. The vegetables will still roast well without it, though the finished mix will have fewer sweet, mellow onion bites. Spread the remaining vegetables across the pan rather than leaving them piled in the center.

How do I keep the vegetables from turning soft before they brown?+

Crowding is the usual culprit: vegetables packed tightly together hold in moisture instead of browning. Spread them across the pan with space between pieces, and use the full surface rather than stacking them. If your pan is crowded, divide the vegetables between pans so they can roast instead of steam.