Grilled Zucchini & Eggplant

Zucchini and eggplant are coated in a garlicky, herby oil, grilled until tender and finished with balsamic vinegar, basil and optional Parmesan. Make it as a warm side dish or serve it alongside other grilled food.
Ingredients
- 2 mediumzucchinis, sliced into 6 mm rounds
- 1 largeeggplant, sliced into 1.3 cm rounds
- 60 ml (¼ cup)olive oil
- 2 clovesgarlic, minced
- 1 teaspoondried oregano
- 1 teaspoonsalt
- ½ teaspoonblack pepper
- ½ teaspoonred pepper flakes
- 1 tablespoonbalsamic vinegar
- to tastefresh basil leaves, for garnish
- 25 g (¼ cup)grated Parmesan cheese (optional)
- to tastelemon wedges, for serving
Instructions
- 1
Prepare the vegetables
Wash the zucchinis and eggplant thoroughly. Slice the zucchinis into 6 mm rounds and the eggplant into 1.3 cm rounds for even cooking, then put the slices in a large bowl.
- 2
Mix the marinade
In a separate bowl, whisk together the olive oil, minced garlic, dried oregano, salt, black pepper and red pepper flakes.
- 3
Marinate the vegetables
Pour the marinade over the zucchini and eggplant and toss to coat every piece. Leave to marinate for at least 15 minutes.
- 4
Preheat the grill
While the vegetables marinate, heat the grill to medium. Clean the grates and lightly oil them.
- 5
Grill the vegetables
Arrange the slices in a single layer on the hot grill. Cook for about 4–5 minutes per side, until tender with visible grill marks.
- 6
Add the vinegar
During the final minute of cooking, drizzle the balsamic vinegar over the grilled vegetables.
- 7
Add the garnishes
Take the vegetables off the grill and arrange them on a serving platter. Garnish with fresh basil and, if desired, grated Parmesan.
- 8
Serve warm
Serve the vegetables warm with lemon wedges for squeezing over the top. They can accompany grilled meats or be eaten on their own.
What is grilled zucchini and eggplant?
This is a simple American-style preparation of summer vegetables cooked over a grill and dressed with herbs, vinegar and optional cheese. Grilling brings out their savoury flavour while giving the slices browned edges.
The method relies on straightforward ingredients rather than a complex sauce. A brief marinade seasons the vegetables, and lemon and basil add freshness at the end.
Nutrition and macros by portion
The nutrition label shows one serving as written: 380 calories, 28g protein, 35g carbs, 14g fat.
| Portion | Adjustment | kcal | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| Lighter | Use less olive oil | 266 kcal | 20g | 25g | 10g |
| This serving | As written | 380 kcal | 28g | 35g | 14g |
| Hungry | Add a grain side | 570 kcal | 42g | 53g | 21g |
The zucchini and eggplant provide most of the carbohydrates, while olive oil contributes much of the fat; Parmesan adds some protein and fat if included. For a more complete plate, serve a portion with a protein-rich main and a grain or another source of carbohydrates.
Choosing and slicing the vegetables
Zucchini: Cut it into 6 mm rounds, as directed, so the slices cook quickly without losing their shape.
Eggplant: Its thicker 1.3 cm rounds take longer to soften, which suits the zucchini’s shorter cooking time. Try to slice each vegetable evenly for more consistent results.
Making the marinade
Oil and garlic: Whisk them with the oregano, salt, pepper and red pepper flakes until combined. The oil helps coat the slices and carries the seasonings across their surfaces.
Marinating: Toss thoroughly, then leave the vegetables for at least 15 minutes. This gives the seasoning time to cling before grilling.
Getting good grill marks
Hot grates: Preheat the grill to medium and clean and lightly oil the grates before adding the vegetables. A single layer gives the slices better contact with the cooking surface.
Turning: Cook each side for about 4–5 minutes, watching for tender centres and clear grill marks. If the slices stick, give them a little longer before turning.
Finishing with vinegar and basil
Balsamic vinegar: Add it during the final minute of grilling, as the method directs. This brings a tangy-sweet finish without leaving the vegetables in the marinade too long.
Basil and Parmesan: Scatter over the basil after grilling so it stays fresh. Parmesan is optional and adds a savoury, salty note.
How to serve it
Lemon: Put wedges on the platter so each person can add a squeeze just before eating. The citrus lifts the rich olive oil and grilled flavours.
Pairings: Serve the vegetables with grilled meats, or make them part of a larger spread with bread, grains or other cooked vegetables.
Recipe notes & tips
- Cut the vegetables to the specified thickness so they cook at a similar pace.
- Toss the slices well to distribute the garlic and seasonings before marinating.
- Leave the vegetables for at least 15 minutes so the marinade has time to coat them.
- Clean and lightly oil the grill grates before cooking to help prevent sticking.
- Grill in a single layer and work in batches if needed.
- Add the balsamic vinegar in the final minute, then finish with basil and lemon.
Variations
- Add thyme: Use it alongside the oregano for a different herbal note.
- Make it milder: Leave out the red pepper flakes.
- Add more citrus: Squeeze extra lemon over the vegetables just before serving.
- Change the cheese: Replace the Parmesan with crumbled feta after grilling.
- Use a grill pan: Cook the slices in batches on a hot, lightly oiled pan.
Common mistakes to avoid
- Uneven slices: Cut each vegetable evenly so pieces are less likely to cook at different rates.
- Crowded grill: Leave space around the slices or cook in batches for better browning.
- Skipping the marinade: Leave the vegetables coated for at least 15 minutes as directed.
- Turning too soon: If a slice sticks, let it cook a little longer before trying to turn it.
- Adding vinegar too early: Drizzle it on during the final minute of grilling.
- Overcooking: Check for tenderness after about 4 minutes per side and remove slices as they are ready.
How to store
Refrigerate leftovers in a covered container and use within 3–4 days. Reheat in a pan or on the grill over medium heat until warmed through; the vegetables will be softer than when freshly cooked.
Frequently asked questions
Can I make this without an outdoor grill?
Yes. Use a hot grill pan and cook the slices in batches, following the same timing and tenderness cues.
How long should the vegetables marinate?
At least 15 minutes, as specified in the method. Toss them again before grilling if any oil and seasonings have settled in the bowl.
How do I know when the slices are done?
They should have visible grill marks and feel tender when pierced. Check them after about 4–5 minutes on each side.
Is the Parmesan necessary?
No, it is optional. The vegetables can be served with basil and lemon alone.
Can I prepare the vegetables ahead?
You can wash and slice them ahead of time, then keep them covered in the fridge. For the freshest texture, grill them shortly before serving.
Cook it from the original
This recipe comes from catherinerecipes.com. Their page has the author’s own photos, notes and tips — the best place to cook it from.
Open the recipe on catherinerecipes.com