Roasted Striped Bass with Fennel, Tomatoes, and Oil-Cured Olives
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 16 Jan 2026
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This Mediterranean-inspired roasted striped bass is a fantastic example of a heart-healthy main course that doesn't compromise on flavour. By roasting the whole fish on a bed of thinly sliced fennel and red onions, the flesh stays incredibly moist while absorbing the aromatic juices from the vegetables and reduced white wine. The addition of burst cherry tomatoes and salty oil-cured olives creates a vibrant, colourful traybake that is as beautiful to look at as it is delicious to eat.
Ideal for a sophisticated weekend lunch or a nutritious family dinner, this dish celebrates fresh, seasonal ingredients. Searing the fish in a frying pan first ensures a wonderful texture to the skin before it finishes cooking in the oven. Serve this elegant seafood platter in the centre of the table with some crusty bread to soak up the fragrant roasting juices.
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Ingredients for Roasted Striped Bass with Fennel, Tomatoes, and Oil-Cured Olives
475ml dry white wine
240ml (about) extra-virgin olive oil
2 large fresh fennel bulbs with fronds attached, trimmed
bulbs quartered lengthwise, then thinly sliced
fronds chopped and reserved for garnish
1 large red onion, halved lengthwise through root end, thinly sliced (about 725ml )
3 1 1/4- to 675g whole striped bass, cleaned, gutted, scaled
30g (about) plain flour
6 large garlic cloves, peeled, crushed, divided
3/4 cup chopped fresh Italian parsley, divided
450g cherry tomatoes, halved
120ml oil-cured black olives, pitted, halved
How to make Roasted Striped Bass with Fennel, Tomatoes, and Oil-Cured Olives
Position rack in centre of oven and preheat to 204°C. Boil wine in medium saucepan until reduced to 240ml , about 5 minutes. Remove from heat and reserve.
Generously brush 18x12x1-inch baking sheet with olive oil. Arrange fennel slices in single layer on prepared baking sheet. Top with onion slices in single layer. Sprinkle with salt and freshly ground black pepper. Drizzle 60ml oil over vegetables.
Rinse fish inside and out; pat dry with paper towels. Sprinkle fish inside and out with salt and freshly ground black pepper. Lightly dust outside of fish with flour. Pour enough olive oil into extra-large skillet to reach depth of 1/4 inch; heat over medium-high heat until oil is very hot. Working with 1 fish at a time, add fish to skillet and fry until golden crust forms on skin, about 3 minutes per side. Carefully place fish atop vegetables on baking sheet. Gently stuff cavity of each fish with 2 crushed garlic cloves, then 1/4 cup chopped parsley. Pour reserved wine over vegetables on baking sheet.
Roast fish uncovered until vegetables begin to soften, 35 to 40 minutes. Scatter tomato halves and olives around fish; bake until fish is just cooked through, about 15 minutes longer. Transfer fish to large platter; cover with foil to keep warm. Increase oven temperature to 246°C. Continue to bake vegetables uncovered until tender and tomatoes are very soft and beginning to colour in spots, about 15 minutes longer.
Arrange vegetable mixture around fish on platter. Drizzle with 2 tablespoons oil. Sprinkle chopped fennel fronds over fish and serve.
Disclaimer
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Article history
The information on this page is peer reviewed by qualified clinicians.
16 Jan 2026 | Originally published
Authored by:
UK recipe editors
Peer reviewed by
UK recipe editors

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