How Long To Cook Zucchini In Foil On Grill

How long to cook zucchini in foil on grill depends on the thickness of your slices and the heat of your grill.
 
As a general rule, zucchini in foil on the grill takes about 10 to 15 minutes over medium-high heat.
 
That timing gives you perfectly tender zucchini with a slight bite, without turning it into mush.
 
If you’ve ever wondered how long to cook zucchini in foil on grill, you’re in the right place.
 
In this post, we’ll cover exactly how long to cook zucchini in foil on grill, plus tips for getting the best flavor and texture every single time.
 
Let’s get grilling.
 

How Long to Cook Zucchini in Foil on Grill

The short answer is 10 to 15 minutes, but several factors affect that number.
 
Here’s what determines how long to cook zucchini in foil on grill:
 

1. Thickness of Your Slices

How long to cook zucchini in foil on grill starts with how thick you cut it.
 
Thin slices or half-moon pieces around ¼ inch thick cook in about 8 to 10 minutes.
 
Thicker rounds or spears closer to ½ inch need 12 to 15 minutes.
 
Keep your pieces uniform so everything cooks evenly in the foil packet.
 

2. Grill Temperature

Medium-high heat, around 400°F to 450°F, is the sweet spot for zucchini in foil on the grill.
 
At that temperature, how long to cook zucchini in foil on grill lands right around 10 to 15 minutes.
 
If your grill runs hotter, check the packet at 8 minutes so the zucchini doesn’t overcook.
 
If your grill is cooler, expect closer to 18 minutes.
 

3. Foil Packet Size and Sealing

A tightly sealed foil packet traps steam, which speeds up cooking.
 
That’s why how long to cook zucchini in foil on grill is usually faster than grilling zucchini directly on the grates.
 
A loose or open packet lets steam escape, so the zucchini takes longer and may dry out.
 
Fold the edges tightly to lock in moisture for the best results.
 

4. Preheating Matters More Than You Think

Always preheat your grill for 10 to 15 minutes before adding the foil packet.
 
A properly preheated grill means how long to cook zucchini in foil on grill stays predictable at 10 to 15 minutes.
 
Skipping preheating throws off your timing and can leave the zucchini unevenly cooked.
 

How to Cook Zucchini in Foil on Grill Perfectly

Knowing how long to cook zucchini in foil on grill is only half the battle.
 
Here’s how to nail the whole process from start to finish.
 

1. Prep the Zucchini

Slice your zucchini into rounds or spears, about ¼ to ½ inch thick.
 
Pat them dry with a paper towel so they don’t steam into mush.
 
Toss with olive oil, salt, pepper, and any seasonings you love.
 
Garlic powder, Italian herbs, and a squeeze of lemon all work beautifully.
 

2. Build the Foil Packet

Lay a sheet of heavy-duty foil on your counter.
 
Spread the seasoned zucchini in a single layer in the center.
 
Add a pat of butter or a drizzle of olive oil for extra richness.
 
Fold the foil over and seal all edges tightly to create a steam pocket.
 

3. Grill and Flip

Place the packet on the preheated grill and close the lid.
 
After about 7 minutes, carefully flip the packet using tongs.
 
This ensures even cooking so your zucchini in foil on the grill cooks through on both sides.
 
Total cook time should land between 10 and 15 minutes.
 

4. Check for Doneness

Open the foil carefully since steam will rush out.
 
The zucchini should be tender when pierced with a fork but not falling apart.
 
If it needs more time, reseal the packet and grill for another 3 to 5 minutes.
 
Remember, how long to cook zucchini in foil on grill depends on your setup, so trust your senses over the clock.
 

5. Finish with Fresh Toppings

Once off the grill, sprinkle with parmesan, fresh herbs, or a squeeze of lemon.
 
These finishing touches elevate simple zucchini in foil on the grill into something special.
 

Common Mistakes When Cooking Zucchini in Foil on Grill

Even when you know how long to cook zucchini in foil on grill, a few missteps can ruin the dish.
 
Here are the mistakes to avoid.
 

1. Overcrowding the Packet

Piling too much zucchini into one packet means it steams unevenly.
 
Use two packets if needed so the zucchini cooks in a single layer.
 

2. Skipping the Oil

Oil keeps zucchini from sticking to the foil and adds flavor.
 
Without it, your zucchini in foil on the grill can turn dry and bland.
 

3. Cooking Too Long

Zucchini gets mushy fast, so err on the side of less time.
 
How long to cook zucchini in foil on grill should never exceed 20 minutes, even for thick slices.
 

4. Not Preheating the Grill

A cold grill throws off your timing completely.
 
Preheat first, and how long to cook zucchini in foil on grill becomes easy to predict.
 

So, How Long to Cook Zucchini in Foil on Grill?

How long to cook zucchini in foil on grill comes down to 10 to 15 minutes over medium-high heat.
 
Thicker slices need closer to 15 minutes, while thin ones finish in about 10.
 
Keep the packet sealed, preheat your grill, and check for tenderness before pulling it off.
 
With these tips, you’ll get perfectly tender, flavorful zucchini in foil on the grill every time.
 
Now fire up that grill and enjoy.