Name: Oven Baked Mediterranean Branzino with Potatoes and Veggies
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Ingredients: 2 whole branzino (about 1 to 1 1/4 lb each), cleaned and scaled; 3 tablespoons extra-virgin olive oil; 1 1/2 teaspoons kosher salt; 1/2 teaspoon freshly ground black pepper; 2 teaspoons dried oregano; 1 teaspoon dried thyme; 1 lemon, thinly sliced; 4 cloves garlic, thinly sliced; 1 pound Yukon gold potatoes, thinly sliced; 1 medium red onion, thinly sliced; 1 medium zucchini, sliced into half-moons; 1 medium red bell pepper, sliced; 6 cherry tomatoes, halved; 2 tablespoons fresh parsley, chopped; 2 tablespoons fresh lemon juice

Oven Baked Mediterranean Branzino with potatoes and veggies tastes bright, herby, and a little bit smoky, with crispy skin and tender, buttery fish. It works perfectly for busy home cooks who want a restaurant-style seafood dinner in about 45–55 minutes, start to finish. I grew up in a family that treated whole fish like a holiday, so I still get a little giddy every time I slide a tray of branzino into the oven.

Why Make This Oven Baked Mediterranean Branzino with potatoes and veggies at Home

You control everything at home: the quality of the branzino, the salt level, the amount of olive oil, and how many veggies you pack around it. The result tastes fresher than most restaurant versions, costs less, and leaves your kitchen smelling like a seaside taverna instead of a fish market.

Whole Mediterranean branzino cooks quickly and stays juicy, while the potatoes and veggies soak up all the garlicky lemon juices. You get a full sheet pan dinner with protein, carbs, and vegetables in one go, which means fewer dishes and more time to sit down and eat.

“This oven baked Mediterranean branzino with potatoes and veggies tastes like a vacation on a sheet pan, with zero fussy restaurant drama.”

Ingredients You Need

Branzino and main produce

2 whole Mediterranean branzino, about 1 to 1¼ pounds each, cleaned and scaled
- Ask the fishmonger to clean and scale them to save time.
- Fresh branzino should smell like the ocean, not like, well, fish.
1½ pounds baby potatoes, halved
- Use yellow or red potatoes; they hold shape and roast nicely.
- If you only have larger potatoes, cut them into 1-inch chunks.
1 red bell pepper, sliced into strips
1 yellow bell pepper, sliced into strips
1 small red onion, cut into thick wedges
1 small zucchini, sliced into half-moons
1 small fennel bulb, cored and thinly sliced (optional but highly recommended)
8 to 10 whole cherry or grape tomatoes

Aromatics and flavor base

4 to 5 garlic cloves, minced
Zest of 1 lemon
Juice of 1½ to 2 lemons (about 4 tablespoons)
2 tablespoons chopped fresh parsley
1 tablespoon chopped fresh oregano or 1 teaspoon dried oregano
1 tablespoon chopped fresh thyme or 1 teaspoon dried thyme
1 teaspoon smoked paprika
½ teaspoon ground coriander (optional but adds nice depth)
¼ to ½ teaspoon crushed red pepper flakes, to taste
Kosher salt and freshly ground black pepper, to taste

Oils and pantry shortcuts

¼ to ⅓ cup extra virgin olive oil
- Use a decent-tasting olive oil since it flavors the whole dish.
2 tablespoons capers, drained (jarred capers add briny punch without extra work)
8 to 10 pitted Kalamata olives or mixed Mediterranean olives, roughly chopped
- Jarred olives work perfectly; no need for anything fancy.

Stuffing and garnish

1 lemon, thinly sliced into rounds
A few extra sprigs of fresh parsley, oregano, or thyme
Extra chopped parsley for serving

Equipment list

Large rimmed baking sheet or roasting pan (big enough to fit both fish in a single layer)
Parchment paper or light coating of oil for the pan
Small mixing bowl for the marinade
Cutting board and sharp knife
Paper towels to dry the fish
Tongs or a spatula to move veggies and fish
Instant-read thermometer (optional, but very helpful for perfect doneness)

Tips & Mistakes

Pat the branzino very dry so the skin roasts and crisps instead of steaming.
Score the fish lightly on each side so the seasoning reaches the flesh and the fish cooks evenly.
Cut potatoes into similar sizes so they roast at the same rate and finish with the fish.
Toss veggies with enough olive oil; dry veggies burn instead of caramelizing.
Salt the potatoes and veggies generously since they carry a lot of the flavor.
Season the inside cavity of the branzino; many cooks skip this and end up with bland fish.
Roast the potatoes and veggies alone for a short time if they need more cooking than the fish.
Avoid overcooking the branzino; pull it when the flesh flakes easily and looks opaque.
Do not crowd the pan; give the fish and veggies some space so they roast instead of steam.
Squeeze fresh lemon over the fish right before serving to brighten the flavors.

How to Make Oven Baked Mediterranean Branzino with potatoes and veggies

Step 1: Prep the oven, pan, and veggies

Preheat your oven to 425°F and line a large rimmed baking sheet with parchment or lightly oil it. Add the halved baby potatoes, bell peppers, red onion, zucchini, fennel, and cherry tomatoes to the pan. Drizzle with about half of the olive oil, season with salt, black pepper, smoked paprika, and a pinch of red pepper flakes, then toss everything so the veggies and potatoes coat evenly.

Spread the veggies and potatoes into a mostly even layer, keeping a space in the center for the fish. Slide the pan into the oven and roast for 15 minutes while you prep the branzino. This head start gives the potatoes a chance to soften so they finish at the same time as the fish.

Step 2: Mix the Mediterranean marinade

In a small bowl, combine the minced garlic, lemon zest, lemon juice, remaining olive oil, chopped parsley, oregano, thyme, ground coriander, and a pinch of salt and pepper. Whisk until the mixture looks emulsified and fragrant. Taste and adjust salt, pepper, or lemon juice to your liking.

Set aside 1 to 2 tablespoons of this mixture in a separate small bowl for drizzling over the cooked fish. Keep the rest for seasoning the fish and veggies before baking.

Step 3: Prep and season the branzino

Rinse the branzino under cold water and pat very dry with paper towels, inside and out. Use a sharp knife to score each side of the fish with 2 to 3 shallow diagonal cuts, about ½ inch deep. Rub the fish all over with salt and pepper, including inside the cavity.

Spoon some of the marinade inside each cavity and into the scored cuts. Stuff each fish with a few lemon slices and a couple of herb sprigs. Keep any extra lemon slices for the pan.

Step 4: Arrange fish, veggies, and flavor boosters

Pull the baking sheet from the oven after the veggies roast for 15 minutes. Toss the veggies quickly with tongs to keep them from sticking, then push them toward the edges of the pan to make room in the center. Lay the branzino in the middle of the pan, on top of some of the veggies if needed.

Drizzle the remaining marinade over the fish and around the veggies. Scatter the capers and chopped olives over the veggies and around the fish, then tuck any remaining lemon slices around everything.

Step 5: Roast the branzino

Return the pan to the oven and roast at 425°F for 15 to 20 minutes, depending on the size of your branzino. Check around the 15-minute mark; the fish finishes when the flesh flakes easily with a fork and looks opaque all the way to the bone. If you use a thermometer, aim for 135°F to 140°F in the thickest part.

If the potatoes need a bit more color, you can switch the oven to broil for 1 to 2 minutes at the end. Watch closely so the skin on the fish turns crisp and golden but not charred.

Step 6: Rest, garnish, and serve

Remove the pan from the oven and let the fish rest for 3 to 5 minutes so the juices settle. Drizzle the reserved marinade over the top of the branzino and veggies. Sprinkle with extra chopped parsley and a little more black pepper.

Serve the whole fish right from the pan or transfer carefully to a platter with the roasted potatoes and veggies around it. Offer extra lemon wedges on the side so everyone can squeeze more brightness over their portion.

Variations I’ve Tried

Herb swap branzino
Use basil and dill instead of oregano and thyme for a softer, fresher flavor. This version pairs nicely with extra lemon and a little extra garlic.
Spicy harissa branzino
Stir 1 to 2 teaspoons of harissa paste into the marinade for a deeper heat and a touch of smokiness. Add a bit more olive oil to keep the paste from burning.
Garlic and herb only branzino
Skip the olives and capers if you prefer a cleaner flavor and go heavy on garlic, lemon, and parsley. This version works well if you serve salty sides like marinated feta or briny olives on the table.
Sheet pan branzino with root veggies
Swap the zucchini and peppers for carrots and parsnips in cooler months. Cut them smaller and give them an extra 10 minutes of roasting before you add the fish so they soften in time.

How to Serve Oven Baked Mediterranean Branzino with potatoes and veggies

Serve the branzino family style on the sheet pan or on a big platter, then let everyone pull off chunks of fish and scoop up the potatoes and veggies. Add a simple side salad with cucumbers, tomatoes, red onion, and a lemony olive oil dressing for freshness. Warm pita, crusty bread, or a side of fluffy rice soaks up all the garlicky lemon juices. Offer sparkling water with lemon, iced herbal tea, or a light citrusy drink to keep the Mediterranean vibe going.

How to store

Fridge: Cool leftovers to room temperature within 30 minutes, then store fish, potatoes, and veggies in an airtight container in the refrigerator for up to 2 days.
Freezer: Store only the fish if you freeze; place portions in airtight containers or freezer bags and keep up to 1 month for best texture.
Reheating in oven: Reheat in a 300°F oven, covered loosely with foil, for 10 to 12 minutes until warm; this method keeps the fish moist and the potatoes tender.
Reheating in skillet: Warm a little olive oil in a nonstick skillet over low to medium heat and gently reheat fish and veggies until hot; this method refreshes the skin slightly and keeps the veggies from drying out.
Cold leftovers: Flake cold branzino into a salad or grain bowl with the roasted veggies for an easy next-day lunch.