Best-Seasoned Roasted Vegetables with Balsamic Glaze

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

These vegetables are best when roasted until caramelized, with a tangy balsamic glaze that elevates every bite. This mediterranean-inspired vegetarian ready in about 35 minutes pairs medium diced zucchini, diced red bell pepper, diced red onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 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 diced zucchini
• 1 diced red bell pepper
• 1/2 diced red onion
• 3 tbsp olive oil
• 2 tbsp balsamic vinegar
• 2 cloves minced garlic
• 1 tsp dried oregano
• 1/2 tsp salt
• 1/4 tsp black pepper

Instructions

1. Step 1: Preheat oven to 425°F (220°C). Toss 2 medium diced zucchini, 1 diced red bell pepper, and 1/2 diced red onion with 3 tbsp olive oil, 1/2 tsp salt, 1/4 tsp black pepper, and 1 tsp dried oregano in a large bowl until evenly coated.
2. Step 2: Spread vegetables in a single layer on a parchment-lined baking sheet. Roast for 20 minutes, stirring once halfway, until edges are golden and tender.
3. Step 3: Remove from oven, immediately sprinkle with 2 minced garlic cloves and 2 tbsp balsamic vinegar. Return to oven for 3-4 minutes until balsamic reduces into a glossy glaze that clings to vegetables.
4. Step 4: Transfer to a serving dish, ensuring all glaze is distributed. Let rest for 5 minutes to allow flavors to meld before serving hot or warm.