Roasted Rainbow Forest Vegetable Medley with Herb Vinaigrette

By AislePrompt Editorial · Published 2026-07-04 · Updated 2026-07-04

A colorful blend of roasted root vegetables inspired by the vibrant hues of Arizona's Rainbow Forest, drizzled with a fresh herb vinaigrette. This American-inspired vegetarian recipe (gluten free), ready in about 55 minutes, pairs red onion, cut into wedges, olive oil, dried thyme for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 210 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with rice, quinoa, or a quick salad. 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

• 3 medium carrots, peeled and cut into 1-inch chunks
• 2 medium beets, peeled and cut into 1-inch chunks
• 2 medium sweet potatoes, peeled and cubed into 1-inch pieces
• 1 large red onion, cut into wedges
• 3 tbsp olive oil
• 1 tsp dried thyme
• 1 tsp dried rosemary
• 1 tsp salt
• 1/2 tsp black pepper
• 3 tbsp fresh parsley, chopped
• 2 tbsp fresh lemon juice
• 1 tsp honey
• 1 tsp Dijon mustard

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Instructions

1. Step 1: Preheat oven to 400°F. In a large mixing bowl, toss 3 peeled and chunked carrots, 2 peeled and chunked beets, 2 peeled and cubed sweet potatoes, and 1 large cut red onion with 3 tbsp olive oil, 1 tsp dried thyme, 1 tsp dried rosemary, 1 tsp salt, and 1/2 tsp black pepper until all vegetables are coated.
2. Step 2: Spread the vegetables evenly on a large baking sheet and roast for 35-40 minutes, turning halfway through, until tender and edges are caramelized.
3. Step 3: Meanwhile, whisk together 3 tbsp chopped fresh parsley, 2 tbsp fresh lemon juice, 1 tsp honey, and 1 tsp Dijon mustard in a small bowl to create the herb vinaigrette.
4. Step 4: Once vegetables are roasted, transfer them to a serving dish and drizzle with the herb vinaigrette while still warm. Toss gently to coat before serving.