I still remember the first November I hosted Friends-giving in my tiny Chicago apartment. The turkey was—let’s be honest—dry, the mashed potatoes were gluey, and I forgot to buy gravy. But the dish that saved the entire meal was a humble sheet-pan of burnished squash cubes and crispy-edged Brussels sprouts, fragrant with rosemary and thyme. My best friend, who claimed to “hate” Brussels sprouts, asked for thirds and then demanded the recipe. That was seven years ago. Since then, this roasted winter squash and Brussels sprouts medley has graced every holiday table I set, from Thanksgiving to New Year’s brunch. It’s vegan, gluten-free, and packed with enough color and caramelized flavor to anchor the vegetarian corner of any buffet. More importantly, it requires one bowl, one pan, and practically zero babysitting—freeing you up to obsess over the pie crust instead.

Why This Recipe Works

High-heat roasting: 425 °F guarantees deep caramelization without turning the squash to mush.
Pre-heated sheet pan: Starting the vegetables on a hot surface jump-starts browning and prevents sticking.
Staggered add-ins: Brussels sprouts go in first so the outer leaves frizzle while the squash stays tender.
Fresh woody herbs: Rosemary and thyme infuse the oil before it ever hits the vegetables, maximizing flavor.
Maple-mustard glaze: A whisper of sweetness balances the sprouts’ bitterness and encourages lacquered edges.
Make-ahead friendly: Roast up to three days early; a quick blast in a hot oven restores crispness.

Ingredients You'll Need

Think of winter squash as your edible sunshine during the darker months. I routinely use a 50/50 mix of butternut and honeynut because butternut offers heft while honeynut delivers concentrated sweetness and edible skin—fewer peels, more nutrients. If you can only find one variety, aim for about 2 ½ lbs total after peeling and seeding. Kabocha or red kuri squash are stellar stand-ins; their dense flesh stays custardy inside while the exterior bronzes.

When shopping for Brussels sprouts, look for tight, bright-green heads the size of large marbles. Smaller sprouts taste milder and roast faster. If you see still-attached stems, snap one off—fresh sprouts squeak slightly when rubbed together.

Extra-virgin olive oil is non-negotiable; it’s both cooking fat and flavor backbone. You’ll need enough to coat every cube and leaf thoroughly—dry vegetables steam instead of roast.

For herbs, grab woody stems of fresh rosemary and thyme. Dried versions won’t perfume the oil the same way, but if you must substitute, use 1 tsp dried rosemary and ¾ tsp dried thyme for every tablespoon of fresh.

Maple syrup heightens sweetness, while Dijon mustard adds tangy depth. Together they create a glossy finish that makes the vegetables look glazed like bakery-case pastries. Vegans, check that your Dijon is honey-free.

Finally, keep flaky sea salt and freshly cracked black pepper on standby for finishing. A final snow of salt wakes up the natural sugars and gives the crust that crave-able crunch.

How to Make Roasted Winter Squash and Brussels Sprouts with Rosemary and Thyme

Heat your sheet pan

Place a rimmed 18×13-inch half-sheet pan on the lowest oven rack and preheat to 425 °F (220 °C). A screaming-hot surface jump-starts caramelization and prevents the notorious “stick-and-rip” when you flip the vegetables later.

Prep the herb oil

In a small saucepan over low heat, combine ⅓ cup olive oil, 2 tsp finely minced fresh rosemary, and 1 tsp fresh thyme leaves. Warm just until the herbs start to sizzle and perfume the kitchen—about 2 minutes—then remove from heat. This blooming step releases the essential oils and infuses every vegetable later.

Trim and halve the Brussels sprouts

Slice off the dried stem end and remove any yellow outer leaves. Cut small sprouts in half and large ones into quarters so every piece is roughly the same size; this prevents the dreaded half-charred, half-raw bite. Transfer to a large mixing bowl.

Cube the squash

Peel butternut with a sturdy vegetable peeler, slice crosswise into 1-inch rounds, then cut into 1-inch cubes. If using honeynut, simply halve, scoop seeds, and slice into half-moons—no peeling required. Aim for uniformity so the pieces cook evenly. Add to the bowl with the sprouts.

Season aggressively

Pour the warm herb oil over the vegetables, scraping in every fleck of rosemary. Add 1 Tbsp maple syrup, 1 tsp Dijon, 1 ½ tsp kosher salt, and ½ tsp black pepper. Toss with clean hands or a silicone spatula until every surface gleams. The sprouts should look almost wet; if they appear parched, drizzle another tablespoon of oil.

Roast the Brussels sprouts first

Carefully slide the rack out and scatter the Brussels sprouts, cut-side down, onto the hot pan. Roast for 10 minutes. This head start allows the leaves to blister and develop those addictive lacy chips.

Add squash and continue roasting

Add the squash cubes to the pan, keeping them in a single layer. Roast another 20–25 minutes, stirring once halfway through, until the squash is tender and the sprouts are deeply browned.

Finish and serve

Transfer to a warm platter, scraping up the caramelized pan bits with a wooden spoon. Shower with flaky sea salt and an extra crack of pepper. Serve hot or room temperature.

Expert Tips

Don’t crowd the pan

Overloading traps steam and causes sogginess. Use two pans rather than piling vegetables; they should barely touch.

Flip sparingly

One gentle stir halfway through is enough. Constant turning prevents the deep, almost-black edges that taste like candy.

Reserve the oil

Any leftover herbed oil in your bowl? Drizzle it over the vegetables right before serving for an extra glossy coat.

Re-crisp in a skillet

Leftovers lose their crunch? A cast-iron skillet over medium-high heat for 3 minutes revives them better than a microwave.

Freeze in portions

Roasted vegetables freeze beautifully for 3 months. Spread cooled pieces on a tray, freeze solid, then bag. Reheat directly from frozen at 400 °F for 12 minutes.

Add color with pomegranate

A handful of pomegranate arils scattered on top right before serving adds jewel-tones and a tart pop that complements the sweet squash.

Variations to Try

Smoky chipotle: Swap maple syrup for chipotle honey and add ¼ tsp smoked paprika to the oil.
Coconut curry: Replace Dijon with 1 tsp yellow curry paste and use melted coconut oil instead of olive oil.
Balsamic reduction: Skip the maple-mustard and drizzle 2 Tbsp thick balsamic reduction during the last 5 minutes of roasting.
Cranberry-orange: Toss in ½ cup fresh cranberries and a teaspoon of orange zest with the squash for a festive twist.
Chestnut & sage: Fold in roasted, peeled chestnuts and crisped sage leaves during the final 5 minutes.

Storage Tips

Refrigerator: Cool completely, then store in an airtight container up to 4 days. For best texture, reheat in a 400 °F oven or air-fryer for 6–8 minutes rather than microwaving.

Freezer: Spread cooled vegetables in a single layer on a parchment-lined sheet pan. Freeze until solid, then transfer to a zip-top bag, pressing out excess air. Keeps 3 months. Reheat from frozen at 400 °F for 12–15 minutes, shaking once.

Make-ahead for holidays: Roast up to two days early, refrigerate, then reheat uncovered at 400 °F for 12 minutes. Add a fresh drizzle of olive oil and a pinch of salt to perk them up.