Grilled Zucchini Recipe With Parmesan Cheese: Charred Edges With Melty Topping

This grilled zucchini delivers charred edges and a melty parmesan topping that transforms a simple vegetable into something extraordinary. The high heat coaxes out natural sweetness while creating those coveted grill marks we all love.

The key is slicing the zucchini thick enough to hold up to the grill and topping it with parmesan just as it comes off the heat. This guarantees that perfect crispy, cheesy finish that makes every bite irresistibly savory.

Ingredients for Grilled Zucchini Recipe with Parmesan Cheese

Thick-cut zucchini, bold parmesan, and a few extras for that perfect charred finish.

[recipe_ingredient_scaler]

The zucchini needs to be fresh and firm—look for small to medium ones at Whole Foods or your local farmers market (they bruise less). Slice them 1/2-inch thick so they hold up to the grill. For the Parmesan, Parmigiano-Reggiano is worth the splurge—it melts beautifully and has that sharp, nutty flavor. Pre-grated stuff just doesn’t compare.

No fresh basil? Dried oregano at half the amount works in a pinch. Out of balsamic glaze? Reduce balsamic vinegar by half in a small saucepan for 5 minutes. The garlic can be granulated at one-third the amount, but fresh tastes brighter. If zucchini isn’t your thing, eggplant or yellow squash grill just as well.

Zucchini keeps 4-5 days in the fridge—store unwashed in a paper bag. The grilled slices? Best eaten fresh, but leftovers hold 2-3 days in an airtight container. Reheat in a skillet to crisp up the cheese again.

Step-by-Step Instructions for Grilled Zucchini With Parmesan Cheese

Here’s how to achieve perfectly charred edges and melty Parmesan every time.

Step 1: Prepare the Zucchini for Grilling

Slice the 4 whole Zucchini lengthwise into ½-inch thick planks. I use a sharp chef’s knife for clean, even cuts. Arrange them on a baking sheet and brush both sides lightly with 1 tbsp Extra-Virgin Olive Oil—just enough to coat.

Sprinkle with ½ tsp Coarse Sea Salt on each side. This pre-salting draws out excess moisture, which helps achieve those beautiful grill marks. Let them sit for 10 minutes while you preheat your grill to medium-high heat.

Step 2: Grill to Charred Perfection

Place the zucchini slices directly on the grill grates. Cook undisturbed for 4-5 minutes per side until you see deep char marks and the edges begin to soften. Resist the urge to move them—this ensures even cooking and maximum caramelization.

During the last 2 minutes of grilling, brush the tops with another 1 tbsp Extra-Virgin Olive Oil. This prevents the Parmesan from sticking to the grill. The zucchini is done when it’s tender but still holds its shape when lifted with tongs.

Step 3: Add the Parmesan and Garlic Topping

Transfer the grilled zucchini to a serving platter. Immediately sprinkle the 1 cup Parmesan Cheese evenly over the hot slices—it will begin to melt from the residual heat. Scatter the 3 cloves minced Garlic Cloves on top, along with the zest of the Lemon.

If using, add a pinch of 0.5 tsp Red Pepper Flakes for subtle heat. The cheese should start to bubble slightly as it melts into the warm zucchini. This step transforms the dish from simple grilled vegetables to something truly special.

Step 4: Finish with Fresh Herbs and Drizzles

Drizzle the remaining 1 tbsp Extra-Virgin Olive Oil and all 2 tbsp Balsamic Glaze over the zucchini. The balsamic adds a sweet-tart contrast that pairs beautifully with the salty Parmesan.

Finish with 0.25 cup Fresh Basil Leaves and a squeeze of Lemon juice. Sprinkle with the remaining ½ tsp Coarse Sea Salt and 0.5 tsp Freshly Ground Black Pepper. Serve immediately while the cheese is still melty and the zucchini is warm.

Storing and Reheating Leftovers

Refrigerator Storage

Let your grilled zucchini cool completely before storing—I usually spread slices on a baking sheet for 20 minutes to speed this up. Transfer to an airtight container with parchment between layers to prevent sticking. It’ll keep for 2-3 days at 40°F or below. ❄️

Freezer Storage

For longer storage, freeze in a single layer on a tray first, then transfer to a freezer bag. This prevents the slices from clumping together. It’ll maintain quality for up to 2 months, though the texture softens slightly after thawing. Squeeze out excess air to avoid freezer burn.

Oven Reheating

Preheat your oven to 375°F and spread slices on a baking sheet. Cover loosely with foil and heat for 8-10 minutes, then uncover for 2 minutes to crisp the cheese. This method revives the dish beautifully without drying it out. 🔥

Skillet Reheating

Heat a skillet over medium heat and add the zucchini in a single layer. Cover for 3-4 minutes, then uncover and sprinkle with a little extra Parmesan to refresh the topping. This is my go-to for quick, crispy results.