Why This Recipe Works

High-heat roasting: 425 °F caramelizes the natural sugars in carrots and parsnips without drying them out.
Two-stage seasoning: A dry rub of coriander, salt, and pepper creates a crust; the citrus glaze finishes with shine.
Orange supremes: Segments added in the last 5 minutes stay plump and burst like citrus caviar.
Fresh thyme stems: Tucked under the veg so the leaves perfume the oil without burning.
Parchment collar: Prevents sticky glaze from cementing to the pan and makes cleanup a 30-second affair.
Make-ahead friendly: Roast early, re-warm at 300 °F for 10 minutes; flavor actually improves overnight.

Ingredients You'll Need

Choose carrots the width of your thumb—slender enough to roast whole in the time it takes the parsnip batons to cook through. Look for bunches with feathery tops still attached; they’re the freshest and keep carrots hydrated. Parsnips should feel dense, with skin as smooth as porcelain and no sprouting eyes. If you spot tiny ones, grab them; their cores are almost core-less and sweet as pears.

Coriander seeds are worth buying whole; toast them in a dry pan until they smell like lemon-pepper popcorn, then crush with the bottom of a heavy mug. Pre-ground coriander fades fast and lacks the floral punch. For the orange layer, use unwaxed fruit if you can find them—zest is the star and you don’t want wax in your glaze. If blood oranges are in season, swap one in for a shocking magenta pop. Maple syrup keeps the glaze vegan; honey works too, but go easy—it browns faster. Finish with flaky sea salt so you get tiny bursts of crunch against the sticky citrus shell.

How to Make Warm Citrus Roasted Carrots and Parsnips with Orange Zest for January

Heat & prep

Place rack in center of oven; preheat to 425 °F (220 °C). Line a rimmed sheet with parchment, letting wings overhang for easy lift-out later. This prevents the sugars from welding to the metal and saves you from chiseling at midnight.

Toast & crack

In a small dry skillet, toast 1 tsp coriander seeds over medium heat until fragrant, 2–3 min. Tip onto a cutting board, let cool, then crush until half are powder and half are chunky confetti. This dual texture gives pockets of citrusy perfume and surprise crunch.

Trim & cut

Scrub 1½ lb carrots; peel 1½ lb parsnips. Leave skinny carrots whole; halve thicker ones lengthwise so all pieces are finger-width. Cut parsnips into 3-inch batons, removing woody cores if they feel spongy. Uniformity equals even caramelization.

First seasoning

Toss vegetables in a large bowl with 2 Tbsp olive oil, toasted coriander, ¾ tsp kosher salt, and ½ tsp black pepper. Use your hands; the oil should barely coat your palm when you clap—too much and veg will steam, too little and they’ll scorch.

Arrange with thyme

Spread veg in a single layer, cut-sides down for maximum contact. Nestle 4 sprigs fresh thyme underneath so the leaves infuse the oil but stay protected from direct heat. Roast 15 min undisturbed—this is when the bottoms turn espresso-brown.

Build the glaze

While veg roast, whisk 3 Tbsp fresh orange juice, 1 tsp orange zest, 1 tsp maple syrup, ½ tsp Dijon, and a pinch of salt. The mustard emulsifies the juice and syrup so they cling instead of puddling.

Flip & coat

Remove sheet, flip veg with thin spatula, drizzle half the glaze, and shake pan to coat. Return to oven 10 min. The second exposure lets the sugars bubble and start to lacquer without burning.

Add orange supremes

Supreme 1 orange: slice off peel, cut between membranes to release jewel-like segments. After the second 10 min, scatter supremes over veg, add remaining glaze, and roast 5 min more. Segments warm through but stay intact, bursting with hot citrus when bitten.

Finish & serve

Transfer to platter, scraping every last sticky bit with spatula. Shower with 1 tsp fresh orange zest, 1 Tbsp chopped parsley, and flaky sea salt. Serve piping hot—cooling dulls the citrus top notes.

Expert Tips

Double-sheet trick

If your oven runs hot, slide a second empty sheet on the rack below to diffuse heat and prevent bitter bottoms.

Zest first, juice second

Zest oranges before juicing—microplanes hate trying to grate floppy squeezed halves.

Coriander shortcut

No mortar? Place seeds in a zip bag and whack with a cast-iron skillet—works like a charm and vents frustration.

Crispy thyme leaves

For extra crunch, strip a few leaves from an extra sprig, toss with a drop of oil, and scatter on top for the last 2 min.

Make-ahead glaze

Whisk a triple batch of glaze and refrigerate up to 5 days. It’s stellar on salmon, tofu, or even roasted pineapple.

Color pop

Use rainbow carrots—yellow ones taste like sweet corn and turn the platter into a winter sunset.

Variations to Try

Harissa heat

Swap coriander for ½ tsp toasted cumin plus 1 tsp harissa paste in the glaze for a smoky North-African twist.

Maple-miso umami

Whisk 1 tsp white miso into the glaze for salty-sweet complexity that makes veg taste like roasted caramel.

Root medley

Replace half the parsnips with batons of celery root or golden beets; they roast in the same timeframe.

Citrus swap

Try ruby grapefruit or tangerine juice; reduce maple slightly since these fruits are sweeter than navel oranges.

Storage Tips

Let leftovers cool completely—trapped steam turns the glaze gummy. Transfer to an airtight glass container; plastic will absorb the orange tint. Refrigerate up to 4 days. To reheat, spread on a parchment-lined sheet and warm at 300 °F for 8–10 min; microwaves make them mushy and mute the zest. The glazed veg also love a skillet: medium heat with a splash of water creates a quick steam that revives their glossy coat.

For longer storage, freeze roasted veg (without supremes) in a single layer on a tray, then bag for up to 2 months. Thaw overnight in fridge and refresh under broiler 2 min. Orange segments don’t freeze well; add fresh ones when serving. If you plan to meal-prep, reserve extra glaze in a jar; a quick whisk and drizzle over reheated veg brings back just-roasted shine.

Frequently Asked Questions

Yes, but choose true baby carrots with tops, not the whittled-down “baby-cut” bagged ones which are often dry. Halve lengthwise so they roast at the same rate as parsnips.

Slice the parsnip in half crosswise; if the center looks whiter and feels hollow, cut it out with a small paring knife. Large parsnips are the culprit; smaller ones rarely have this issue.

Substitute 2 Tbsp aquafaba or stock for the oil, but expect less browning. Toss every 8 min and broil the last 2 min for color. Texture will be chewier rather than crisp-edged.

Add the glaze in two stages: first after the initial 15 min roast, then again with the orange segments. Maple burns above 350 °F; the second shorter exposure prevents bitterness.

Absolutely. Use a grill basket over medium-high (about 450 °F surface). Toss every 4 min for 12–14 min total, adding glaze only in the last 3 min to avoid flare-ups.

Citrus loves fat: try herb-crusted salmon, lemon-thyme roast chicken, or crispy tofu cubes tossed in the same glaze. For a plant-based main, serve over lemony lentils with tahini drizzle.