Grilled Vegetable Panino with Olive Oil

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This panino starts with a grill pan and a few sturdy vegetables. Zucchini, eggplant, and bell pepper get charred until tender, then layered on thick-cut bread with a generous drizzle of extra virgin olive oil.

The olive oil is not a garnish here. It soaks into the bread, coats the vegetables, and ties the whole sandwich together. Use one you’d actually taste on its own.

No spreads needed, no cheese required, though a few slices of fresh mozzarella or a smear of ricotta works well if you want it — similar to how a grilled zucchini wrap with lemon ricotta leans on creamy cheese to complement charred vegetables. The grilled vegetables carry enough flavor on their own.

This recipe makes four panini and comes together in about 40 minutes, most of which is hands-off grill time.

Why You’ll Love This Recipe

• One grill pan, minimal cleanup, full meal
• Olive oil does the seasoning work for you
• Holds well, making it ideal for packed lunches
• Naturally plant-based with no substitutions needed

Ingredient Notes

• eggplant: Slice thin (about 5 mm) so it cooks through before the outside burns. Salt the slices for 10 minutes if yours looks especially watery, then pat dry.
• zucchini: Cut on a bias for more surface area on the grill. Yellow squash works as a straight swap.
• bell pepper: Red or yellow are sweeter and char more evenly than green. You can use jarred roasted peppers if you’re short on time, just pat them dry.
• extra virgin olive oil: This recipe uses olive oil as the primary seasoning, so quality matters. A fruity, mild oil (not bitter or peppery) suits the vegetables best.
• ciabatta or rustic bread: Ciabatta is the classic choice for its open crumb and sturdy crust. A good sourdough loaf or a baguette split lengthwise both work.
• fresh basil: Add it after grilling, never during. Heat kills the fragrance. If basil isn’t available, fresh flat-leaf parsley or a few arugula leaves hold up fine.

Grilled Vegetable Panino with Olive Oil

A hearty Italian-style grilled vegetable panino built with charred zucchini, eggplant, and bell pepper on crusty bread, finished with extra virgin olive oil and fresh basil.

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Prep Time 15 minutes mins

Cook Time 25 minutes mins

Total Time 40 minutes mins

Servings: 4 panini

Calories: 430

Ingredients Method Notes

Ingredients

  

Vegetables

• 1 medium (about 300 g) eggplant, sliced 5 mm thick salted and patted dry
• 2 medium (about 300 g) zucchini, sliced on a bias 5 mm thick
• 2 large red bell pepper, quartered and seeded
• 4 tbsp extra virgin olive oil divided, plus more for drizzling
• 1 tsp flaky sea salt
• 1/2 tsp black pepper, freshly ground

Sandwich

• 4 portions (about 100 g each) ciabatta rolls or ciabatta loaf cut into 4 portions
• 16 large leaves fresh basil leaves
• 1 garlic clove peeled, for rubbing bread
• 2 tbsp extra virgin olive oil for finishing
• 200 g fresh mozzarella, sliced 5 mm thick optional

Method

 

Prepare the Vegetables

1. Lay eggplant slices on a tray, sprinkle with half the flaky salt, and let sit 10 minutes. Pat dry with paper towels.
2. Toss eggplant, zucchini, and bell pepper quarters in 3 tbsp olive oil until evenly coated.
3. Heat a grill pan over medium-high heat for 3 minutes until it just begins to smoke.

Grill the Vegetables

1. Grill bell peppers skin-side down for 5 to 6 minutes until the skin blisters and chars, then flip and cook 2 more minutes until tender. Transfer to a plate.
2. Grill zucchini slices for 2 to 3 minutes per side until grill marks appear and slices bend without snapping. Transfer to the plate.
3. Grill eggplant slices for 3 to 4 minutes per side until golden brown and soft through the center. Transfer to the plate.
4. Season all vegetables with the remaining flaky salt and black pepper while still hot.

Build the Panino

1. Slice each ciabatta portion in half horizontally. Rub the cut sides with the raw garlic clove, then drizzle each half with about 1/2 tsp olive oil.
2. Layer the bottom halves with eggplant, zucchini, and bell pepper. Add mozzarella slices if using.
3. Lay 4 basil leaves over the vegetables on each sandwich, then close with the top half of the bread.
4. Heat a dry skillet or grill pan over medium heat. Place each panino in the pan and press with a heavy skillet or cast iron press. Cook 2 to 3 minutes per side until the crust is golden and crisp and the filling is warmed through.
5. Cut each panino in half diagonally and serve immediately.

Notes

Nutrition calculated without optional mozzarella. Add approximately 70 kcal, 5 g protein, and 5 g fat per serving if mozzarella is included.

Tips for Success

• Preheat your grill pan over medium-high for at least 3 minutes before adding vegetables, so you get clean grill marks.
• Brush vegetables with olive oil before grilling, not after, to prevent sticking and promote even browning.
• Season each vegetable layer with flaky salt as it comes off the grill, while still hot and able to absorb it.
• Press the assembled panino under a heavy skillet or cast iron pan for 2 minutes per side to compress and warm the bread.
• Let the grilled vegetables cool to room temperature before building the sandwich so the bread doesn’t steam and go soggy.

Variations

• Add sliced fresh mozzarella and sun-dried tomatoes for a caprese-style grilled panino.
• Spread a thin layer of white bean hummus on the bread instead of drizzling olive oil directly.
• Use portobello mushroom slices in place of eggplant for a meatier, umami-forward version.

Storage and Reheating

Store grilled vegetables and bread separately if you’re making ahead. Grilled vegetables keep in an airtight container in the fridge for up to 4 days.

Assembled panini are best eaten within a few hours of building. If you do refrigerate a built panino, wrap it tightly in parchment and eat it within 24 hours. The bread will soften but still taste good.

To reheat, place the panino in a dry skillet over medium heat for 2 to 3 minutes per side, pressing down gently. This crisps the crust back up without drying out the vegetables.

Serving Suggestions

These panini work as a standalone lunch. Pair with a simple green salad dressed in lemon and olive oil, or a white bean garlic soup with lemon oil for something more substantial on a cooler day.

For a spread, cut each panino into thirds and serve alongside olives, pickled peppers, and a board of cured meats or cheeses. It fits naturally into an antipasto-style setup.

A cold glass of sparkling water with lemon or a light Italian white like Pinot Grigio cuts through the richness of the olive oil and complements the charred vegetables.

FAQ

Why is my grilled eggplant in the panino turning out bitter?

Bitterness usually comes from older eggplant or not salting the slices before grilling, a prep step also worth noting for the smoky eggplant yogurt pita where the same fruit is the star. Sprinkle the slices with salt, let them sit 10 minutes, then pat dry before they hit the grill. Younger, smaller eggplants tend to be milder and need less prep.

Can I use focaccia instead of ciabatta for this grilled vegetable panino?

Focaccia works, but it’s oilier and softer, so the sandwich will be richer and harder to press without tearing. If you use it, skip the extra olive oil drizzle inside or the bread can get greasy. Ciabatta or sourdough gives a cleaner result.

Can I grill the vegetables the night before and build the panino the next day?

Yes, grilled vegetables store well overnight in the fridge. Build the sandwich fresh the next day and press it in a skillet to warm it through. Don’t pre-build and refrigerate overnight, the bread turns soft and loses structure.

What cheese pairs well with the grilled vegetables in this panino?

Fresh mozzarella is the cleanest option, it melts slightly when pressed and doesn’t compete with the olive oil. Ricotta adds creaminess, and aged provolone brings a sharper contrast. Goat cheese works if you want something tangier.

Is this grilled vegetable panino gluten free?

Not as written, since it uses ciabatta or sourdough bread. Swap in a sturdy gluten-free loaf or GF focaccia and the filling itself is naturally gluten free. Check that your bread choice toasts or grills without crumbling before building the sandwich.

What is the difference between a panino and a panini?

Panino is the singular Italian word for one sandwich. Panini is the plural, so two or more. In American usage, ‘panini’ is often used for a single pressed sandwich, but strictly speaking one sandwich is a panino.