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How Long to Roast Courgette Slices?
Roasting courgette slices in the oven usually takes about 15 to 20 minutes at 200°C (400°F).
That’s the sweet spot for tender, golden slices with slightly caramelized edges.
If you’ve been wondering how long to roast courgette slices so they turn out perfectly every time, this guide is for you.
The exact time depends on how thick you cut them, how hot your oven runs, and whether you’re aiming for soft and juicy or crispy and browned.
In this post, we’ll walk through how long to roast courgette slices, how to prep them, and how to get the texture you actually want.
How Long to Roast Courgette Slices at Different Thicknesses
The biggest factor in how long to roast courgette slices is thickness.
Courgettes are mostly water, so thin slices cook fast while thick slices need more time to soften and brown.
1. Thin Slices (3mm / ⅛ inch): 10–12 Minutes
Thin courgette slices roast very quickly.
At 200°C (400°F), they usually take 10 to 12 minutes.
Flip them halfway through so both sides get even color.
These are great if you want crispy courgette slices for sandwiches, pizzas, or snacking.
Keep an eye on them because thin slices can go from golden to burnt in a minute or two.
2. Medium Slices (6mm / ¼ inch): 15–20 Minutes
This is the most common thickness for roasting courgette slices.
Medium slices take around 15 to 20 minutes at 200°C (400°F).
They come out tender inside with nicely browned edges.
If you want them softer, roast closer to 20 minutes.
For a bit of bite, pull them out around 15 minutes.
3. Thick Slices (1cm / ½ inch): 20–25 Minutes
Thick courgette slices need more time.
Plan for 20 to 25 minutes at the same temperature.
They hold their shape well and stay juicy, which makes them perfect for grilling-style sides or layered dishes.
Flip once at the halfway mark so they cook evenly.
How to Prep Courgette Slices for Roasting
Knowing how long to roast courgette slices starts with proper prep.
If you skip these steps, your slices can turn out soggy instead of golden.
1. Slice Them Evenly
Even slices cook at the same rate.
Use a sharp knife or mandoline to keep every courgette slice the same thickness.
That way, no slice ends up raw while another turns to mush.
2. Salt and Drain the Water
Courgettes are packed with water.
Sprinkle salt on the slices and let them sit for 10 to 15 minutes.
Then pat them dry with a clean towel or paper towel.
This step is the secret to getting crispy roasted courgette slices instead of steamed ones.
3. Toss With Oil and Seasoning
Coat the slices lightly in olive oil.
Add salt, pepper, garlic powder, or dried herbs like oregano and thyme.
Don’t overdo the oil, or the courgette slices will turn greasy rather than crisp.
A tablespoon or two for a whole tray is usually enough.
4. Spread Them in a Single Layer
Crowding the tray traps steam.
Lay the courgette slices flat with a little space between each one.
If needed, use two trays.
This helps them roast instead of steam, which cuts down on how long to roast courgette slices because the heat reaches every piece evenly.
Tips for Perfect Roasted Courgette Slices
Even with the right timing, small tweaks make a big difference in how your courgette slices turn out.
1. Preheat the Oven Properly
A fully preheated oven at 200°C (400°F) gives courgette slices that quick blast of heat they need.
If you put them in a cold oven, they release water slowly and end up soft and pale.
Give your oven at least 10 to 15 minutes to reach temperature.
2. Use the Right Baking Tray
A dark, heavy baking sheet browns courgette slices faster than a light one.
Line it with parchment paper for easy cleanup, but skip foil if you want crispier edges.
Parchment lets the heat circulate while keeping the slices from sticking.
3. Flip Halfway Through
Flipping is key when you’re roasting courgette slices.
At the halfway mark, use tongs or a spatula to turn each slice over.
This helps both sides brown evenly and prevents one side from burning while the other stays pale.
4. Broil for Extra Crispness
If you want extra crispy courgette slices, switch to the broiler for the last 1 to 2 minutes.
Watch closely because they can burn fast.
This trick works well when you want to shave a couple of minutes off how long to roast courgette slices for a crispy result.
5. Adjust for Your Oven
Every oven runs a little differently.
If yours runs hot, reduce the time by a few minutes.
If it runs cool, add a few extra minutes and check every 3 to 4 minutes.
The best way to nail how long to roast courgette slices is to check them at the lower end of the range and go from there.
So, How Long to Roast Courgette Slices?
Roasting courgette slices takes about 15 to 20 minutes at 200°C (400°F) for medium slices.
Thin slices take 10 to 12 minutes, while thick slices need 20 to 25 minutes.
Proper prep like salting, drying, and spreading them in a single layer makes all the difference.
And flipping halfway through gives you those golden, caramelized edges everyone loves.
Now that you know how long to roast courgette slices, you can turn this humble veggie into a crispy, flavorful side dish any night of the week.