Grilled Fourth-Season Vegetable Skewers with Herb Marinade

By Lauren Mitchell, Test Kitchen Director · Reviewed by AislePrompt Editorial · Published 2026-07-27 · Updated 2026-07-27

Colorful seasonal vegetables marinated in fresh herbs and grilled to smoky perfection on skewers. This mediterranean-inspired grilling (vegetarian) ready in about 27 minutes blends small, cut into wedges red onion, whole button mushrooms, olive oil into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 150 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. 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

• 1 medium, sliced into 1/2-inch thick rounds zucchini
• 1 large, cut into 1-inch pieces red bell pepper
• 1 medium, sliced into 1/2-inch thick rounds yellow squash
• 1 small, cut into wedges red onion
• 8 whole button mushrooms
• 1/4 cup olive oil
• 1 tbsp chopped fresh rosemary
• 1 tbsp chopped fresh thyme
• 3 minced garlic cloves
• 2 tbsp lemon juice
• 1 tsp salt
• 1/2 tsp black pepper
• 8 soaked in water for 30 minutes wooden skewers

Instructions

1. Step 1: In a medium bowl, combine 1/4 cup olive oil, 1 tbsp chopped fresh rosemary, 1 tbsp chopped fresh thyme, 3 minced garlic cloves, 2 tbsp lemon juice, 1 tsp salt, and 1/2 tsp black pepper to create the marinade.
2. Step 2: Add 1 sliced medium zucchini (1/2-inch rounds), 1 large red bell pepper cut into 1-inch pieces, 1 sliced medium yellow squash (1/2-inch rounds), 1 small red onion cut into wedges, and 8 whole button mushrooms to the marinade and toss gently to coat all vegetables.
3. Step 3: Cover and marinate the vegetables in the refrigerator for 30 minutes to absorb the herb flavors.
4. Step 4: Thread the marinated vegetables onto 8 soaked wooden skewers, alternating types for colorful presentation.
5. Step 5: Preheat a grill or grill pan to medium-high heat (around 400°F). Grill the skewers for 10-12 minutes, turning every 3 minutes, until vegetables are tender and have nice grill marks.
6. Step 6: Remove from grill and serve warm as a flavorful side or vegetarian main.