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Your guide to grilled vegetables, plus two delicious recipes.
There’s something about grilling vegetables that transforms them. Maybe it’s the char, the smoke, the caramelization that only high heat can deliver. Maybe it’s being outside, tongs in hand, watching everything sizzle and blister. Whatever it is, grilled vegetables taste like summer.
The grill brings out sweetness in peppers and onions, gives eggplant a meaty richness, and turns zucchini from watery to wonderful. And unlike meat, vegetables are forgiving — they generally don’t need precise temperatures or times. Just oil, seasoning, and heat.
This guide covers everything you need to know about grilling vegetables: which ones work best, how to prep them, and a few standout recipes to get you started. Grill extra and use leftovers for sandwiches, grain bowls, or a next-level crudité platter.
Grilling Tips
- Grill extra: Make enough for dinner, then use leftovers for sandwiches, salads, or grain bowls the next day.
- Use plenty of oil: Vegetables need generous coating to get golden and caramelized rather than dried out or burnt. Don’t be shy.
- Season boldly: Grilled vegetables can handle more salt and pepper than you think. Season before and after grilling.
- Sample frequently: Taste testing bites (carefully) as they cook is the best way to make sure they are perfectly cooked to your liking. Do note that they will continue to cook a little after removing them from the grill.
- Indoor option: No outdoor grill? A cast-iron grill pan on your stovetop works beautifully.
Vegetables to Grill
Eggplant: Becomes meaty and tender when grilled. It absorbs oil like a sponge, so brush it generously to bring out its creamy texture. Look for eggplant that feels firm and heavy for its size with smooth, glossy skin.
Zucchini: Summer usually brings an abundance of zucchini, and the grill is the easiest way to cook it. Slice lengthwise into planks, brush with olive oil, season with salt and pepper, and grill until tender with grill marks, about 3 to 4 minutes per side.
Portobello Mushrooms: The grill’s smoky flavor makes portobellos taste richer and meatier than roasting, and they can take a marinade surprisingly well. Remove the stems, brush the caps with oil, and grill gill-side down first. Try Balsamic-Soy Marinated Portobello Steaks.
Onions: Slice into thick rounds (keep the rings intact) and grill until soft and caramelized. The natural sugars intensify on the grill, making them sweet and jammy.
Bell Peppers: Fire-roasting peppers on the grill takes them to another level entirely. Char them whole over high heat until blackened on all sides, then steam in a covered bowl to loosen the skins. Peel, seed, and slice. Use them in sandwiches, pastas, salads, or grain bowls. They also freeze well for later use.
Corn: Grill it in the husk for perfectly steamed kernels, or shuck it first and char the kernels directly over the flames for the best corn salsa, taco topping, or summer salad addition.
Cauliflower: Takes high heat beautifully and gets crispy, charred edges while staying tender inside. Cut into large florets with flat sides so they sit directly on the grill grates, or slice the whole head into thick “steaks” for a hearty vegetarian main. The closed grill lid creates an oven effect that cooks the interior while crisping the outside. Toss with oil generously before grilling.
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RECIPE: Grilled Veggie Sandwich
- Yield: Serves 4
Description
Soft focaccia bread layered with grilled eggplant, sweet charred bell pepper, caramelized red onion, peppery arugula, and garlic-lemon aioli. The vegetables are grilled until tender and smoky, then stacked high for a satisfying summer sandwich.
Ingredients
- 1/3 cup mayonnaise
- 1-2 cloves garlic, finely minced
- 1 Tbsp lemon juice
- Kosher salt
- 1 medium eggplant, sliced crosswise into 1/2-inch rounds
- 1 red bell pepper
- 1 red onion, peeled and sliced crosswise into 1/2-inch rounds
- Olive oil
- Freshly ground black pepper
- 1 loaf focaccia bread, halved horizontally (or 4 ciabatta rolls)
- 1-1 1/2 cups baby arugula
- Aged balsamic vinegar for drizzling
Instructions
- Preheat the grill to medium-high heat. Whisk together the mayonnaise, garlic, lemon juice, and a pinch of salt to make the aioli. Set aside.
- Place the eggplant, bell pepper, and onion slices on a sheet pan. Brush generously with olive oil, and season with salt and pepper.
- Start with the bell pepper: Grill over high heat, turning every few minutes, until charred on all sides, about 8 to 10 minutes total. Place in a bowl and cover with a plate (or put in a paper bag). Let steam for 10 minutes, then peel off the charred skin with a paper towel. Remove seeds and slice into strips.
- While the pepper steams, grill the eggplant and onion until softened with nice grill marks, turning once, about 4 to 5 minutes per side.
- Brush the cut sides of the bread lightly with olive oil and toast on the grill, about 1 to 2 minutes.
- Spread the aioli on both cut sides of the bread. Layer with grilled vegetables and arugula. Drizzle with balsamic vinegar. Close the sandwich, slice into portions, and serve.
Notes
- Soft bread like focaccia lets the delicate grilled vegetables shine without overpowering them.
- The aioli can be made the night before for deeper garlic flavor.
- Swap the aioli for arugula pesto for an herbaceous version.
- Other great additions: grilled zucchini, portobello mushrooms, or fresh heirloom tomato slices.
- If you don’t have aged balsamic vinegar (which is thicker and sweeter), reduce regular balsamic in a small saucepan over medium heat for 8 to 10 minutes until syrupy.
- Grill the vegetables ahead of time to assemble sandwiches later or pack for a picnic.
RECIPE: Crispy Grilled Cauliflower
- Yield: Serves 4–6 1x
Description
Grilled cauliflower florets get crispy and charred on the outside while staying tender inside. Topped with Parmesan, lemon, and fresh herbs. The key is high heat, patience, and keeping the grill lid closed to create an oven effect that crisps the exterior while cooking through.
Ingredients
- 1 large head cauliflower
- 3-4 Tbsps olive oil
- Kosher salt and freshly ground black pepper
- 1 lemon, halved
- 1/4 cup grated Parmesan cheese
- 2 Tbsps chopped fresh parsley (or basil, cilantro, or chives)
Instructions
- Preheat the grill to medium-high heat. To prep the cauliflower, remove leaves and trim the stem (save both for a stir-fry). Cut the head into large florets (about 2- to 3-inch pieces), slicing through the stem so each piece has a flat side to sit on the grill grates.
- Pat the florets completely dry with a kitchen towel. Place in a large bowl and toss with olive oil, salt, and pepper until fully coated.
- Place florets flat-side down on the hot grill. Close the lid and cook for 5 to 7 minutes without moving. Flip and grill the other side for another 5 to 7 minutes, closing the lid again. Continue turning every few minutes until florets are tender inside and golden-crispy on the outside, about 15 to 20 minutes total. If they’re browning too quickly, move to a cooler part of the grill to finish cooking through.
- Transfer to a serving platter. Squeeze lemon over the top, and sprinkle with Parmesan cheese and fresh herbs while still hot. Serve immediately.
Notes
- Save the stem and leaves to use in a stir-fry.
- Use a grill basket or perforated grill pan for easier flipping and to prevent smaller pieces from falling through the grates.
- For maximum crispiness, dry the florets thoroughly, don’t move them too soon, avoid crowding, and use high heat.
- Leftovers are great tossed into salads with vinaigrette.
