Courgettes have a habit of turning from firm green vegetables into a puddle of soft slices if you bake them badly. They contain a lot of water, so the way you cut them and arrange them on a tray matters more than an elaborate list of seasonings.
This guide covers simple roasted courgette chunks, long baked wedges and cheesy rounds. In American recipes they are called zucchini. The same preparation principles apply to both names, but thin slices need far less cooking than thick wedges.
Choose courgettes that will hold their shape
Start with firm, fresh courgettes with smooth intact skins. Medium ones are a dependable option for roasting. Giant courgettes may contain a noticeably softer seedy centre, which can release more moisture.
Check for bruises or slimy spots and trim the ends. The skin is edible, so there is normally no reason to peel it; keeping the skin helps the pieces retain their shape.
Wash the courgettes under running water and dry them before chopping. Even a well-roasted vegetable struggles to brown when it starts covered in droplets.
Cut for the texture you want
For browned chunks, slice the courgette lengthways, then cut into half-moons about 2cm thick. For sturdy wedges, quarter lengthways and cut into shorter lengths. These pieces retain some bite in the middle.
Very thin rounds are useful for a gratin, but they soften quickly. If you spread paper-thin slices on a roasting tray and leave them as long as large chunks, expect shrinking and burnt edges.
Consistent pieces cook evenly. If you have some thin ends and some thick middle pieces, separate them or begin checking the thin ones earlier.
Preheat the oven properly
A typical roasting temperature is 220°C conventional or 200°C fan. This is a useful starting point rather than a universal rule, as oven models and tray materials vary.
Put a metal baking tray in a fully heated oven if the tray manufacturer allows preheating. The initial contact with a hot surface can encourage browning, but handle the tray with dry oven gloves.
If you are baking a creamy gratin, the temperature and method will be different because the goal is a bubbling sauce rather than dry browned edges. Follow the recipe for that dish.
Use a light coating of oil
Toss two medium courgettes with roughly one to two tablespoons of olive oil, adjusting for size and the rest of the recipe. The pieces need a thin film, not enough oil to swim.
Season with salt, black pepper and perhaps dried oregano or thyme. A little smoked paprika gives colour, while fresh garlic is best added late or mixed into a topping because fine pieces may burn.
A spoonful of oil can help the vegetables roast evenly, but it cannot overcome overcrowding. Two trays with a thin layer will generally work better than one tray piled high.
Spread pieces in a single layer
Leave a small gap between wedges and turn cut sides towards the hot tray when practical. If the pieces touch all along their edges, steam gets trapped and they soften rather than brown.
Do not heap sliced courgette under foil for a roast-style result. Foil and lids are useful when you actively want soft steamed vegetables, but they prevent moisture from escaping.
Use two trays if cooking for a crowd. Rotate their positions if the oven has hot and cool areas. Keep an eye on the back corners, which may brown before the centre.
How long should courgettes bake?
For roughly 2cm chunks at 200°C fan, begin checking after 15 minutes and expect around 20–25 minutes for many ovens. Smaller rounds and very thin strips may be ready sooner; thick wedges may need longer.
Turn the vegetables once if you want colour on several sides. Look for lightly browned edges and a centre that yields to a fork without collapsing completely.
The clock is only guidance. Freshness, cut size, tray thickness and oven performance all change timing. Remove the courgettes when they suit your preferred texture.
Should you salt courgettes beforehand?
If you are making a layered bake with thin slices, lightly salting and allowing the pieces to drain can remove some moisture. Pat them dry before assembling the dish and adjust the seasoning later.
For normal roasted chunks, advance salting is often unnecessary. In fact, leaving salty pieces in a bowl until they release water can leave you with a wet tray unless you drain them properly.
Do not salt twice automatically. Cheese, olives and sauces may already add considerable salt, so taste the finished food before adding more.
Add cheese at the right moment
For parmesan-topped slices, bake the courgettes until almost tender, then sprinkle a little grated cheese over the surface and return the tray briefly until the topping melts or browns.
Adding fine cheese from the beginning of a high-temperature roast can lead to burnt bits before the vegetables are ready. A later topping gives you more control.
Mozzarella releases more moisture and gives a softer, stretchy result. That is ideal in a baked pasta or gratin, but less suitable if your goal is crisp roasted courgette edges.
Flavour ideas that do not drown the vegetables
Lemon zest, black pepper and parsley are excellent after roasting. A spoonful of pesto tossed through the hot vegetables can be delicious, although it will soften their outer surface.
Try cumin and coriander for a warm savoury version or oregano and a little tomato for a Mediterranean plate. If using balsamic vinegar, add lightly near the end to avoid a wet, sharply tasting tray.
Fresh mint is particularly good with courgettes. Add it after cooking rather than roasting it until black.
Why your baked courgettes are soggy
Usually there is too much water trapped around the pieces. You may have cut them too thin for the cooking time, used a very crowded tray or added a wet marinade before baking.
A cold oven and thick ceramic dish can also produce gentler, slower heating. That is fine for a casserole, but less effective when chasing browned edges.
You can rescue slightly soft courgettes by draining accumulated liquid, spreading them on a clean tray and briefly returning them to a hot oven. Very overcooked courgettes will not recover their original crunch.
Leftovers and reheating
Cool cooked courgettes promptly and store in the fridge. Reheat in a hot frying pan or oven until thoroughly hot if you want to regain some roasted flavour.
Expect the texture to be softer after chilling because the vegetables release more water. Leftover pieces work well stirred into pasta, omelettes or soup where this does not matter.
Baked courgettes do not need a complicated recipe. Pick sound vegetables, dry them, cut consistently, give them room and stop cooking while the centres still have some structure.