Herb-Roasted Root Vegetable Medley with Lemon Zest

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · Published 2026-04-08 · Updated 2026-04-08

A vibrant side dish featuring caramelized carrots and parsnips tossed in rosemary and thyme, finished with bright lemon zest for a perfect balance of earthy and fresh flavors. This american-inspired vegetarian ready in about 40 minutes pairs olive oil, minced garlic, dried thyme for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 140 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 2 medium, peeled and cut into 1-inch pieces carrots
• 2 medium, peeled and cut into 1-inch pieces parsnips
• 1 medium, cut into 1-inch wedges red onion
• 3 tbsp olive oil
• 4 cloves, minced garlic
• 1 tsp dried thyme
• 1 tsp finely chopped fresh rosemary
• 1, zest only lemon
• 1/2 tsp salt
• 1/4 tsp black pepper

Instructions

1. Step 1: Preheat oven to 425°F. Place 2 medium peeled and 1-inch cut carrots, 2 medium peeled and 1-inch cut parsnips, and 1 medium 1-inch cut red onion on a large rimmed baking sheet.
2. Step 2: Drizzle 3 tbsp olive oil over vegetables, then add 4 minced garlic cloves, 1 tsp dried thyme, 1 tsp finely chopped fresh rosemary, 1/2 tsp salt, and 1/4 tsp black pepper; toss until evenly coated.
3. Step 3: Spread vegetables in a single layer, roast for 25 minutes, stirring once after 15 minutes, until edges are golden brown and tender when pierced with a fork. Remove from oven, sprinkle with 1 lemon zest, and let rest 5 minutes before serving.