Introduction
Nothing says summer like the smoky aroma of grilled Portobello and zucchini skewers sizzling on the barbecue. This easy vegetarian recipe is a colorful, healthy option that’s perfect for backyard cookouts, weeknight dinners, or even as a hearty side dish. The rich, umami flavor of marinated Portobello mushrooms pairs beautifully with tender, lightly charred zucchini, making each bite irresistibly savory. Whether you’re feeding a crowd or simply enjoying a quiet meal outdoors, these skewers bring a fresh, flavorful twist to your grilling game.
Table of Contents
History or Background
Grilled Portobello and zucchini skewers are a modern spin on traditional Mediterranean and Middle Eastern vegetable kabobs, where fresh produce is often grilled to enhance flavor and texture. Portobello mushrooms have become a go-to meat substitute due to their hearty texture and deep, savory taste, while zucchini is a grilling favorite for its mild flavor and quick cooking time. Together, they form a balanced and satisfying plant-based dish that caters to both vegetarians and grill enthusiasts alike.
Why You’ll Love Grilled Portobello and Zucchini Skewers
Grilled Portobello and zucchini skewers are more than just a pretty plate—they’re packed with benefits:
- Flavor-packed: The balsamic marinade infuses the mushrooms and zucchini with a rich, tangy depth.
- Quick & easy: Ready in just 25 minutes, making them perfect for weeknight meals or impromptu BBQs.
- Healthy & low-calorie: Naturally low in fat and calories while being high in fiber and nutrients.
- Vegan & gluten-free: A crowd-pleasing option that fits many dietary preferences.
- Perfect for grilling season: Ideal for summer cookouts, camping trips, or backyard dinners.
Ingredients for Grilled Portobello and Zucchini Skewers
To make these delicious grilled Portobello and zucchini skewers, you’ll need just a few simple ingredients:
- 4 large Portobello mushrooms, cleaned and stems removed
- 2 medium zucchinis, sliced into thick rounds
- 3 tablespoons extra virgin olive oil
- 2 tablespoons balsamic vinegar
- 1 teaspoon garlic powder
- Salt and pepper, to taste

These ingredients combine to create a savory, well-balanced marinade that enhances the earthy flavor of the Portobellos and the mild sweetness of zucchini. You can easily double or triple the quantities for larger gatherings using the scale ratio: 1x, 2x, or 3x.
How to Make Grilled Portobello and Zucchini Skewers
Follow these simple steps to make flavorful grilled Portobello and zucchini skewers that everyone will love:
- Make the marinade: In a medium bowl, whisk together the olive oil, balsamic vinegar, garlic powder, salt, and pepper.
- Marinate the veggies: Place the cleaned Portobello mushrooms and zucchini slices in a large resealable bag or bowl. Pour the marinade over the veggies, seal, and toss gently to coat. Let sit for at least 30 minutes, turning once or twice for even flavor.
- Preheat the grill: Heat your grill to medium-high. Clean and oil the grates to prevent sticking.
- Assemble the skewers: Thread alternating pieces of marinated mushroom and zucchini onto metal or soaked wooden skewers. Leave a bit of space between each piece for even cooking.
- Grill the skewers: Place the skewers on the grill and cook for 8–10 minutes, turning occasionally until the veggies are tender and slightly charred.
- Serve: Remove from the grill and serve warm. For extra flavor, drizzle with balsamic glaze or sprinkle with fresh herbs.
Pro Tips for Grilled Portobello and Zucchini Skewers
Make your grilled Portobello and zucchini skewers even better with these handy tips:
- Don’t skip the marinade: Letting the veggies marinate for at least 30 minutes infuses them with flavor and keeps them juicy on the grill.
- Use metal skewers: They hold up better to heat and don’t require soaking like wooden ones.
- Cut evenly: Slice the zucchini and mushrooms into similar-sized pieces so everything cooks at the same rate.
Serving Ideas for Grilled Portobello and Zucchini Skewers
Grilled Portobello and zucchini skewers are incredibly versatile and pair well with a variety of dishes:
- Serve as a main dish over a bed of quinoa, couscous, or herbed rice.
- Add to wraps or pitas with hummus, fresh greens, and a drizzle of tahini.
- Pair with grilled meats or plant-based proteins for a balanced BBQ platter.
- Top with feta or vegan cheese for added creaminess and tang.
Perfect for outdoor gatherings, weeknight dinners, or meal prep!

Storage Advice for Grilled Portobello and Zucchini Skewers
Store leftover grilled Portobello and zucchini skewers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the grill, in a skillet, or in the oven to maintain their texture—avoid microwaving to prevent sogginess.
FAQs about Grilled Portobello and Zucchini Skewers
Do I need to salt zucchini before grilling?
Salting zucchini before grilling isn’t necessary for this recipe, but doing so can draw out excess moisture and prevent sogginess. If you prefer, sprinkle with salt, let sit for 10–15 minutes, then pat dry before marinating.
Should you pre-cook vegetables for kabobs?
No, for grilled Portobello and zucchini skewers, the vegetables cook quickly on the grill. Pre-cooking isn’t needed and may cause them to become too soft.
Why is my grilled zucchini soggy?
Over-marinating or overcooking can make zucchini soggy. Stick to a short marinating time and grill over medium-high heat for just a few minutes per side.
Should I peel zucchini for kabobs?
No, peeling isn’t necessary. The skin adds color, nutrients, and helps zucchini hold its shape on the grill.
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Pair your cooler with a crisp, tangy side like this Asian Coleslaw recipe—perfect for picnics or BBQs.
For a tropical party vibe, mix things up with this Coconut Lime Sparkler recipe—another zesty, sparkling beverage option.
Conclusion
Grilled Portobello and zucchini skewers are the ultimate blend of smoky flavor, fresh vegetables, and simple preparation. Whether you’re planning a summer BBQ, a cozy weeknight dinner, or a plant-based feast, these skewers deliver taste and nutrition in every bite. Fire up the grill, gather your ingredients, and enjoy this vibrant, crowd-pleasing dish that’s sure to become a warm-weather favorite.

Amazing Grilled Portobello and Zucchini Skewers for a Flavor-Packed Summer BBQ
- Total Time: 25 minutes
- Yield: Serves 4
- Diet: Gluten Free
Description
Grilled Portobello and zucchini skewers are a smoky, flavorful vegetarian dish made with marinated mushrooms and zucchini, charred to perfection on the grill. Perfect for BBQs, weeknight dinners, or healthy sides.
Ingredients
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4 large Portobello mushrooms, cleaned and stems removed
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2 medium zucchinis, sliced into thick rounds
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3 tablespoons extra virgin olive oil
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2 tablespoons balsamic vinegar
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1 teaspoon garlic powder
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Salt and pepper, to taste
Instructions
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Whisk together olive oil, balsamic vinegar, garlic powder, salt, and pepper to make the marinade.
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Add mushrooms and zucchini to a bowl or resealable bag. Pour marinade over and toss to coat. Let sit for at least 30 minutes.
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Preheat grill to medium-high heat and oil the grates.
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Thread mushrooms and zucchini alternately onto skewers, leaving space between each piece.
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Grill for 8–10 minutes, turning occasionally, until tender and lightly charred.
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Serve warm, optionally drizzled with balsamic glaze or sprinkled with herbs.
Notes
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Use metal skewers for easier grilling.
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Cut vegetables evenly to ensure uniform cooking.
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Avoid over-marinating to prevent sogginess.
- Prep Time: 15 minutes
- Cook Time: 10minutes
- Category: Main Course, Side Dish
- Method: Grilling
- Cuisine: American, Mediterranean