Grilled Zucchini Skewers

These smoky, tender grilled zucchini skewers are brushed with a rich garlic herb butter glaze that caramelizes beautifully over an open flame for the ultimate summer side dish.

Why This Recipe Works:

• Thick-cut rounds preserve the vegetable's protein matrix and prevent structural collapse over high heat.
• Brushing the garlic butter glaze during the final minute of cooking prevents the milk solids and garlic from scorching.
• High direct heat rapidly caramelizes the natural sugars in the squash, creating a sweet, smoky crust that balances the rich butter.

Last July, during a humid Tuesday evening block party, I splintered three cheap bamboo skewers trying to force them through a stubborn, raw zucchini round while holding a lukewarm paper cup of lemonade.

It was humiliating.

My neighbor politely watched a stray squash chunk launch off my plate and directly into his prized hydrangeas.

I ended up serving charred, mushy coins that slipped right through the grates because I had sliced them too thin, hoping they would cook faster. Instead, they collapsed under their own water weight, leaving me with nothing but smoky, empty sticks and a bruised culinary ego.

Those cheap, ultra-thin metal skewers failed every single test in my kitchen because the zucchini rounds just spun around uselessly when I tried to flip them.

Zucchini is essentially a sponge masquerading as a vegetable, containing ninety-five percent water. When heat hits those cellular walls, they collapse, releasing a flood of moisture that boils the squash from the inside out.

Think about this in terms of physics.

Without a barrier, you get mush instead of a gorgeous char. This is why standard grilled zucchini often fails.

The fix is incredibly simple: we cut thick, half-inch rounds to maintain structural integrity, then thread them flat-side down. We brush them with a garlic butter glaze infused with oil-soluble flavor compounds from fresh herbs, which clings to the charred edges beautifully.

If you have an absolute mountain of summer squash from your garden and skewers aren't your thing, you can always shred them for crispy Zucchini Fritters.

Let's fire up the grill.

Grilled Zucchini Skewers

• Publisher Storied Skillet
• Cuisine American
• Category Side Dish, Grilling
• Prep Time 15 minutes
• Cook Time 10 minutes
• Servings 4
• Calories 120 calories
• Rating 4.8 5529
• Tags grilled zucchini, zucchini skewers, garlic butter zucchini, summer grilling, easy side dish

Ingredients

• 3 medium zucchini, cut into 1/2-inch thick rounds
• 4 tablespoons unsalted butter, melted
• 3 cloves garlic, finely grated
• 1 teaspoon Diamond Crystal kosher salt
• 1/2 teaspoon freshly cracked black pepper
• 1 tablespoon chopped fresh rosemary
• 1 tablespoon chopped fresh thyme
• Wooden or metal skewers (soaked for 30 minutes if wooden)

Directions

1. Soak wooden skewers in warm water for at least 30 minutes to prevent them from catching fire on the grill.
2. Preheat your grill to medium-high heat (about 400°F / 204°C) and clean the grates thoroughly.
3. Slice the zucchini into uniform 1/2-inch thick rounds; keeping them thick ensures they won't turn mushy or slip off the skewers.
4. Thread the zucchini rounds flat-side down onto the skewers, leaving a tiny bit of space between each piece for even heat circulation.
5. In a small bowl, whisk together the melted unsalted butter, grated garlic, Diamond Crystal kosher salt, black pepper, rosemary, and thyme.
6. Brush the skewers lightly with a small amount of the garlic butter mixture just before placing them on the grill.
7. Grill the skewers for 4 to 5 minutes per side, brushing with more garlic butter during the last minute of cooking to prevent the garlic from burning.
8. Remove from the grill, give them one final brush of the remaining garlic butter, and serve immediately.

Notes

• We highly recommend using Diamond Crystal kosher salt; if you are using Morton's kosher salt or fine table salt, cut the volume by half (use 1/2 teaspoon) to avoid over-salting.
• Garlic contains volatile sulfur compounds that burn easily over direct flame. Grating the garlic finely and whisking it into melted butter helps distribute it evenly, while applying it during the final minute of grilling prevents bitter, scorched notes.
• Do not leave the grill unattended once you brush the butter glaze onto the skewers. The fat in the butter can cause sudden flare-ups, which will quickly turn your beautiful green squash into a soot-covered disaster.
• Leftover zucchini will lose its crisp texture in the fridge as the salt continues to draw out moisture. Store them in an airtight container for up to two days, but expect a softer, more jammy texture upon reheating.

Serving Suggestions

These skewers are the ultimate summer sidekick, bringing a smoky, buttery contrast to almost any main dish. Here are a few of our favorite ways to plate them:

• Pair them with a fresh, vibrant Watermelon Salad to create a beautifully balanced, light summer lunch.
• Slide the charred rounds off the skewers and toss them into a bowl of Creamy Baked Feta Pasta for an instant vegetable boost.
• Serve alongside juicy grilled chicken or steak, using any leftover garlic butter as a dipping sauce.
• Arrange them on a rustic platter garnished with extra fresh herbs, lemon wedges, and a generous sprinkle of flaky sea salt.
• Chop the grilled zucchini up and fold them into a warm grain bowl or a summer pasta salad.

Storage and Reheating

Let's be completely honest here: grilled zucchini is never going to regain its pristine, straight-from-the-grill crispness once it spends a night in the cold depths of your refrigerator. As the squash sits, the salt continues its relentless scientific work, drawing out residual moisture and softening the cell walls.

Do not freeze them.

Freezing will completely destroy the delicate cellular structure, leaving you with a sad, watery mush when thawed. Keep your leftovers in a shallow, airtight container for no more than two days.

When you are ready to reheat, skip the microwave entirely unless you actually enjoy rubbery vegetables. Instead, toss them into a hot cast-iron skillet with a tiny splash of olive oil for three minutes, or pop them under the broiler until they sizzle.

This quick blast of dry heat helps evaporate the surface moisture and revives those gorgeous, caramelized edges.

Ingredient Substitutes

If you don't have everything on hand, don't panic. Here are some easy swaps that work beautifully:

1. Yellow Squash: You can swap half or all of the zucchini for yellow summer squash; they have nearly identical moisture levels and cook in the exact same timeframe.
2. Ghee or Olive Oil: If you want a higher smoke point or a dairy-free option, swap the butter for ghee or a high-quality extra virgin olive oil.
3. Dried Herbs: If fresh rosemary and thyme aren't available, use one teaspoon of dried Italian seasoning instead, but whisk it into the butter early so the dried herbs can rehydrate.
4. Garlic Powder: In a pinch, swap the fresh garlic for a half-teaspoon of garlic powder to avoid any risk of burning on the grill.

There is something incredibly satisfying about watching a humble, often-overlooked garden vegetable steal the show at a backyard cookout. Tap your tongs against your hip twice for good luck, keep an eye on those flames, and enjoy every single buttery, smoky bite.