How To Grill Summer Squash In Foil

You can grill summer squash in foil and get tender, sweet, slightly smoky slices with almost no cleanup.
 
It’s one of the easiest ways to cook summer squash on a grill because the foil steams the squash while the heat chars the edges.
 
If you’ve been wondering how to grill summer squash in foil without turning it into mush, this method is forgiving and fast.
 
In this post, we’ll walk through how to grill summer squash in foil, what seasonings work best, and the little tricks that keep it from sticking or steaming too much.
 
Let’s get grilling.
 

How to Grill Summer Squash in Foil

Grilling summer squash in foil comes down to a few simple moves.
 
Here’s the basic process so your squash comes off the grill tender, caramelized, and full of flavor.
 

1. Prep the Squash and the Foil

Start by washing your summer squash and slicing off the ends.
 
Cut it into half-moon slices about a quarter inch thick, or slice it lengthwise into planks if you want bigger pieces.
 
Tear off a sheet of heavy-duty aluminum foil large enough to hold the squash in a single layer with room to fold.
 
A double layer of foil helps prevent tears and keeps the squash from burning on a hot grill.
 

2. Season Generously

Drizzle the squash with olive oil and toss it with salt, pepper, and garlic powder.
 
Add smoked paprika, Italian herbs, or red pepper flakes if you want more punch.
 
Toss everything together so every slice gets coated, because seasoning is what makes grilled summer squash in foil taste amazing.
 

3. Fold the Foil into a Packet

Spread the seasoned squash in a single layer on the foil, then fold the sides up and seal the top.
 
Leave a small vent or poke a couple of holes so steam can escape, otherwise the squash will get soggy.
 
This foil packet is what lets you grill summer squash in foil without it falling through the grates.
 

4. Grill Over Medium Heat

Place the foil packet on a preheated grill over medium heat, around 375 to 400 degrees Fahrenheit.
 
Cook for 10 to 12 minutes, then carefully open the foil and flip the squash with tongs.
 
Close the foil again and cook another 5 to 8 minutes until the squash is fork-tender with a few browned edges.
 

5. Finish with a Bright Touch

Once the squash is done, squeeze fresh lemon juice over the top and sprinkle on chopped parsley or basil.
 
A little grated parmesan or crumbled feta melts beautifully over hot grilled summer squash in foil.
 
Serve it straight from the foil or slide it onto a platter for a prettier presentation.
 

Why Grilling Summer Squash in Foil Works So Well

Grilling summer squash in foil works because foil traps steam and heat at the same time.
 
That combo cooks the squash through without drying it out, which is a common problem with direct grilling.
 
The foil also keeps small slices from slipping through the grates and makes cleanup a breeze.
 
And because the squash steams first and browns second, you get a texture that’s tender but not mushy.
 

1. It Prevents Sticking and Burning

Summer squash has a high water content, so it tends to stick to bare grill grates.
 
Grilling summer squash in foil solves that problem because the squash never touches the grates directly.
 
You still get those lovely browned edges from the heat, just without the torn, stuck-on mess.
 

2. It Keeps the Squash Moist

The sealed foil holds in moisture, so the squash steams in its own juices.
 
That’s why grilled summer squash in foil stays juicy and sweet instead of turning dry and leathery.
 
Just remember to vent the packet so some steam escapes and the squash doesn’t get waterlogged.
 

3. It’s Perfect for Busy Weeknights

This method takes about 20 minutes from start to finish, including prep.
 
You can season the squash right on the foil, which means fewer dishes and less cleanup.
 
And you can cook grilled summer squash in foil alongside burgers, chicken, or kebabs on the same grill.
 

Tips for the Best Grilled Summer Squash in Foil

A few small tweaks make a big difference when you grill summer squash in foil.
 
Here are the tips I reach for every single time.
 

1. Don’t Overcrowd the Packet

If you pile too much squash into one foil packet, it steams instead of roasts.
 
Use two packets if you’re cooking a lot, so the squash has room to breathe and brown.
 

2. Slice Evenly

Cut your summer squash into similar-sized pieces so they cook at the same rate.
 
Uneven slices mean some pieces turn to mush while others stay firm when you grill summer squash in foil.
 

3. Add a Pat of Butter

A small pat of butter inside the foil adds richness and helps the squash caramelize.
 
It’s optional, but it takes grilled summer squash in foil from good to unforgettable.
 

4. Watch the Heat

Medium heat is the sweet spot for grilling summer squash in foil.
 
High heat can scorch the outside before the inside is tender, and low heat makes the squash soggy.
 

5. Season After Grilling Too

A final pinch of flaky salt and a crack of black pepper after grilling wakes up the flavors.
 
So does a drizzle of good olive oil or a splash of balsamic vinegar.
 

So, How to Grill Summer Squash in Foil?

You grill summer squash in foil by slicing it, seasoning it, sealing it in a vented foil packet, and cooking it over medium heat for about 15 to 20 minutes.
 
Grilling summer squash in foil keeps it tender, juicy, and lightly charred without sticking to the grates.
 
Just remember to vent the packet, avoid overcrowding, and finish with lemon, herbs, or cheese for a fresh boost of flavor.
 
Now you know exactly how to grill summer squash in foil, so fire up the grill and enjoy.