Roast Parsnips with Honey and Mustard

Roast parsnips with honey and mustard are a classic British side dish that turns humble root vegetables into caramelized, sticky-sweet, and tangy bites. The natural earthiness of parsnips pairs beautifully with the floral sweetness of honey and the sharp kick of whole-grain mustard, while high-heat roasting creates crispy edges and a tender interior. This recipe is simple enough for a weeknight yet impressive enough for a holiday table, and it comes together with just a handful of pantry staples.

Ingredients

1 ½ lb (680 g) parsnips, peeled and halved or quartered lengthwise
2 tbsp (30 ml) olive oil
2 tbsp (30 g) unsalted butter, melted
2 tbsp (30 ml) honey
1 tbsp (15 g) whole-grain mustard (or Dijon for a smoother sauce)
½ tsp salt
¼ tsp black pepper
1 tbsp (15 g) chopped fresh parsley (optional, for garnish)

Instructions

Preheat your oven to 425°F (220°C). Line a large baking sheet with parchment paper or foil for easy cleanup.
Prepare the parsnips: peel them and trim the ends. If the parsnips are thick, cut them in half crosswise, then halve or quarter the thicker parts lengthwise so all pieces are roughly the same size—about 2–3 inches long and ½ inch thick. This ensures even cooking.
In a large bowl, whisk together the olive oil, melted butter, honey, mustard, salt, and pepper until well combined.
Add the parsnips to the bowl and toss thoroughly, making sure every piece is coated with the honey-mustard mixture.
Arrange the parsnips in a single layer on the prepared baking sheet, leaving space between pieces so they roast rather than steam. If the pan is crowded, use two sheets or roast in batches.
Roast for 25–30 minutes, flipping the parsnips halfway through with a spatula. They should be golden brown and caramelized on the edges, and easily pierced with a fork. For extra crispiness, broil for the last 2–3 minutes, watching closely to prevent burning.
Remove from the oven and let rest for 2 minutes. Transfer to a serving dish and garnish with fresh parsley if desired. Serve hot.

Tips

Cut evenly: The key to perfectly roasted parsnips is uniform size. If some pieces are much thicker than others, they will cook unevenly—thin ones burn while thick ones stay hard.
Don’t skip the flip: Flipping the parsnips halfway through ensures they caramelize on all sides and don’t stick to the pan. Use a thin metal spatula to turn them gently.
Substitute honey: Maple syrup or brown sugar works well in place of honey, though the flavor will shift slightly. For a less sweet version, reduce honey to 1 tablespoon.
Make ahead: You can peel and cut the parsnips up to a day in advance and store them in a bowl of cold water in the fridge. Dry them well before coating with the glaze.

Serving Suggestions

These honey-mustard parsnips are a versatile side that pairs wonderfully with roasted chicken, turkey, pork tenderloin, or a juicy steak. They also shine alongside a vegetarian main like a lentil loaf or mushroom wellington. For a festive touch, scatter them over a bed of arugula with crumbled goat cheese and toasted walnuts for a warm salad. They’re equally delicious served cold the next day in a grain bowl.

Variations

Herbed: Add 1 teaspoon of fresh thyme leaves or ½ teaspoon dried rosemary to the glaze for an aromatic twist.
Spicy: Add ½ teaspoon of smoked paprika or a pinch of cayenne pepper to the honey-mustard mixture for a subtle heat.
Balsamic: Replace the mustard with 1 tablespoon of balsamic vinegar and reduce honey to 1 tablespoon for a tangier, darker glaze.
Mixed roots: Swap half the parsnips for carrots or sweet potatoes. Adjust cooking time if the pieces are larger—carrots may need a few extra minutes.

Storage and Reheating

Store leftover roasted parsnips in an airtight container in the refrigerator for up to 4 days. To reheat, spread them on a baking sheet and warm in a 375°F (190°C) oven for 5–7 minutes, or until heated through and crisp again. You can also microwave them for 1–2 minutes, but they will lose their crispness. These parsnips are best eaten fresh, but they still taste great reheated. Freezing is not recommended as the texture becomes mushy after thawing.

Frequently Asked Questions

Do I need to peel parsnips? Peeling is recommended for most parsnips because the skin can be tough and fibrous. However, if you have young, thin parsnips with smooth skin, you can simply scrub them well and leave the peel on for extra texture and nutrients.

Why are my parsnips not caramelizing? If your parsnips are steaming instead of browning, the oven might not be hot enough, or the pan is too crowded. Make sure your oven is fully preheated to 425°F (220°C) and that the parsnips are in a single layer with space between them. Also, pat them dry before coating with the glaze—excess moisture inhibits browning.

Can I use Dijon mustard instead of whole-grain? Yes, Dijon mustard will give a smoother, more intense flavor without the visible seeds. Use the same quantity. Yellow mustard can also work but is milder and slightly sweeter.

Can I prepare these ahead of time? You can coat the parsnips with the glaze and keep them in the fridge for up to 2 hours before roasting. If you prepare them further in advance, the salt may draw out moisture, making them less crispy. For best results, roast just before serving.

What if I don’t have honey? Maple syrup, agave nectar, or brown sugar (dissolved in a little warm water) can replace honey. Keep in mind that maple syrup has a distinct flavor that will change the overall taste, but it’s still delicious.

Can I roast parsnips without oil? You can use a non-stick pan and skip the oil, but the parsnips will be less crispy and may dry out. The oil helps conduct heat and promotes browning. If you prefer no oil, toss them in a little melted butter or vegetable broth instead.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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