Mixed Vegetable Garlic Herb Oil Marinade

Name: Mixed Vegetable Garlic Herb Oil Marinade
Prep time: 15 min
Total time: 15 min
Yield: 6 servings
Cuisine: Mediterranean
Ingredients: ½ cup (120 ml) extra virgin olive oil; 3 tablespoon (45 ml) balsamic vinegar; 2 tablespoon (30 ml) fresh lemon juice, freshly squeezed; 4 clove (20 g) garlic cloves, minced; 1½ tablespoon (6 g) fresh oregano, fresh leaves, finely chopped; 1 tablespoon (3 g) fresh basil, fresh leaves, finely chopped; ½ tablespoon (2 g) fresh thyme, fresh leaves, finely chopped; 1 teaspoon (6 g) sea salt; ½ teaspoon (1 g) black pepper, freshly ground; ¼ teaspoon (½ g) red pepper flakes (optional); 2 medium (250 g) bell peppers (red, yellow, or orange), cut into 1.5-inch (4 cm) pieces; 2 medium (300 g) zucchini, sliced into 1/4-inch (6 mm) thick rounds; 8 oz (225 g) cremini or button mushrooms, halved or quartered; 1 small (100 g) red onion, cut into 1.5-inch (4 cm) pieces (optional)

From the MyKitchenBank Kitchen

A bright, Mediterranean-inspired marinade brings out the best in fresh vegetables. This quick, versatile preparation pairs fruity olive oil with garlic, fresh herbs, and a splash of balsamic vinegar to create an aromatic dressing that elevates bell peppers, zucchini, and mushrooms. Serve marinated vegetables as a simple appetizer, toss them into salads and grain bowls, or use them as a base for quick grilling or roasting. The balance of oil, acid, and herbaceous flavors makes this an essential pantry recipe for summer gatherings and everyday meals.

Prep: 15 min
Cook: —
Wait: 30 min
Total: 45 min
Makes: About 4 cups (950 ml) of marinated vegetables; serves 6 as a side dish or appetizer

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Ingredients

6 servings

For the Marinade
½ cup (120 ml) extra virgin olive oil
3 tablespoon (45 ml) balsamic vinegar
2 tablespoon (30 ml) fresh lemon juice, freshly squeezed
4 clove (20 g) garlic cloves, minced
1½ tablespoon (6 g) fresh oregano, fresh leaves, finely chopped
1 tablespoon (3 g) fresh basil, fresh leaves, finely chopped
½ tablespoon (2 g) fresh thyme, fresh leaves, finely chopped
1 teaspoon (6 g) sea salt
½ teaspoon (1 g) black pepper, freshly ground
¼ teaspoon (0.5 g) red pepper flakes (optional)
For the Vegetables
2 medium (250 g) bell peppers (red, yellow, or orange), cut into 1.5-inch (4 cm) pieces
2 medium (300 g) zucchini, sliced into 1/4-inch (6 mm) thick rounds
8 oz (225 g) cremini or button mushrooms, halved or quartered
1 small (100 g) red onion, cut into 1.5-inch (4 cm) pieces (optional)

Equipment (10)

Small mixing bowl
Large mixing bowl
Chef's knife
Cutting board
Whisk or fork
Measuring spoons and cups
Spoon or tongs for tossing
Plastic wrap or container with lid
(Optional) Metal or wooden skewers for grilling
(Optional) Baking sheet for roasting

Steps

Before you start

Gather all fresh herbs if using (oregano, basil, thyme) as they make a significant flavor difference
Have a sharp knife and cutting board ready for efficient vegetable prep
Decide whether you'll serve the marinated vegetables cold or cook them by grilling or roasting
Ensure you have a large mixing bowl or container for marinating

1
Prepare the Marinade
- In a small bowl or measuring cup, whisk together the extra virgin olive oil, balsamic vinegar, and fresh lemon juice.
- Add the minced garlic and freshly chopped oregano, basil, and thyme.
- Season with sea salt, freshly ground black pepper, and red pepper flakes if using.
- Whisk vigorously for 30 seconds until well combined and slightly emulsified.
- The mixture should smell strongly of herbs and garlic.
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Ready when: Oil and vinegar are evenly combined, herbs are distributed throughout, and the mixture is aromatic
Tip: Whisking the marinade helps create a more cohesive blend and distributes the herbs evenly, preventing them from settling to the bottom
2
Cut the Vegetables
- Rinse and dry all vegetables thoroughly.
- Using a sharp chef's knife, cut the bell peppers in half lengthwise, remove seeds and stems, then cut into roughly 1.5-inch (4 cm) pieces.
- Slice the zucchini on the bias into 1/4-inch (6 mm) thick slices for an attractive presentation.
- Gently clean the mushrooms with a damp towel and halve or quarter them depending on size—aim for pieces roughly the same size as the bell peppers.
- If using red onion, cut into 1.5-inch (4 cm) pieces.
- Try to keep all pieces fairly uniform in size.
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Ready when: All vegetables are cut into similar-sized pieces, ready to be dressed
Tip: Consistent vegetable sizes ensure even marinating and prevent some pieces from becoming mushy while others stay firm
3
Marinate the Vegetables
- Place all the cut vegetables in a large mixing bowl.
- Pour the prepared marinade over them.
- Using two spoons or clean hands, gently toss the vegetables until every piece is evenly coated with the marinade, paying special attention to coating the cut sides.
- Cover the bowl loosely with plastic wrap or a fitted lid (or transfer to a covered container).
- Marinate at room temperature for 15-30 minutes for a quick result, or cover and refrigerate for up to 4 hours for more pronounced flavor.
- Even 15 minutes of marinating will infuse the vegetables with flavor; longer times create deeper, more complex taste.
- Gently stir or shake the container halfway through longer marinating times.
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Ready when: Vegetables are glistening with marinade and smell fragrant with herbs and garlic
Tip: Marinating at room temperature is faster but refrigerated marinating develops deeper flavor and extends storage life
4
Serve or Finish CookingOven 400°F / 205°C
- The marinated vegetables can be enjoyed fresh as a cold appetizer or side dish, tossed into grain bowls or green salads, or prepared by cooking.
- To grill: drain the vegetables well (reserving the marinade if desired for drizzling), thread onto metal or soaked wooden skewers, and cook over medium-high heat for 8-10 minutes, turning occasionally, until charred and tender.
- To roast: spread the drained vegetables on a baking sheet and roast at 400°F (200°C) for 20-25 minutes, stirring halfway through, until softened and edges are caramelized.
- The reserved marinade makes an excellent drizzle or base for a vinaigrette.
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Ready when: For grilled: vegetables have char marks and are fork-tender. For roasted: vegetables are softened with caramelized edges
Tip: Save the marinade—it's too flavorful to waste and works perfectly as a vinaigrette or finishing drizzle

Good to know

Tips

For the most vibrant flavor, use fresh herbs rather than dried. Fresh herbs add brightness and complexity that dried ones cannot match in a cold marinade.
Cut vegetables to uniform sizes so everything marinates evenly—smaller pieces will soften faster than large ones, leading to uneven results and unpredictable textures.
Room temperature marinating works quickly for eating fresh; refrigeration develops deeper, more complex flavors over 4 hours if you have the time.
Don't discard the leftover marinade after removing vegetables for cooking—it makes an excellent vinaigrette for salads or a drizzle for finished grilled dishes.

Make ahead

Prepare the marinade up to 1 day ahead and store covered in the refrigerator. Cut vegetables up to 4 hours before serving and store in separate containers. For best results, combine vegetables with marinade no more than 4 hours before serving, though you can marinate for as little as 15 minutes. The marinated vegetables keep refrigerated for up to 3 days—flavor deepens over time. For longer storage, serve marinated vegetables at room temperature before storing any leftovers in an airtight container in the refrigerator.

Storage & reheating

Room temperature: up to 2 hours (best served fresh). Refrigerator: up to 3 days in a covered container; flavors deepen over time. Freezer: not recommended, as the texture of marinated vegetables becomes mushy when thawed. Reheat by gently warming in a skillet over medium heat for 3-4 minutes, or serve chilled straight from the refrigerator.

Substitutions

fresh oregano → 2 teaspoons (6 g) dried oregano. Dried herbs are more concentrated, so use about half the amount. Add them to the marinade at the same time as fresh herbs; they will rehydrate and bloom during marinating.
balsamic vinegar → 3 tablespoons (45 ml) red wine vinegar or sherry vinegar. Creates a brighter, less sweet flavor profile while maintaining the necessary acidity. The result will be more tangy than mellow.
bell peppers (red, yellow, or orange) → Cherry tomatoes, cucumber, eggplant, summer squash, artichoke hearts, or green beans. Keep pieces roughly uniform in size for even marinating. Tender vegetables like tomatoes and cucumbers may soften faster than heartier vegetables.
garlic cloves → 2 teaspoons (6 g) minced garlic from a jar, or 1/2 teaspoon (1 g) garlic powder. Jarred garlic is convenient; garlic powder is more concentrated, so use sparingly and adjust to taste.