Slow-Roasted Halibut with Burst Tomatoes & Capers
There’s something effortlessly elegant about a dish that feels restaurant-worthy but comes together in one pot. This slow-roasted halibut is exactly that—tender, buttery fish nestled into a garlicky tomato and caper sauce that practically makes itself.
It’s the kind of recipe that lets you entertain without hovering over the stove, filling your kitchen with incredible aromas while you pour a glass of wine and enjoy your guests.
Ingredients
2–3 tablespoons olive oil
2 garlic cloves, thinly sliced
2 dashes red pepper flakes
Sea salt, to taste
Freshly ground black pepper, to taste
4 cups cherry tomatoes, halved
1 tablespoon capers
1 teaspoon fresh thyme, minced
3 skinless halibut fillets (about 1½ inches thick), cut in half
Instructions
1. Preheat the oven to 250°F (or the lowest setting available).
2. Build the flavor base: in a stove-safe Dutch oven, heat the olive oil over medium heat until it begins to shimmer. Add the sliced garlic, red pepper flakes, and a pinch of salt. Cook for 30 seconds to 1 minute, just until the garlic is fragrant (not browned).
3. Add the tomatoes: stir in the halved cherry tomatoes, coating them in the oil and garlic mixture. Turn off the heat.
4. Season the sauce: add the capers, minced thyme, and a generous pinch of salt and pepper. Give everything a gentle stir.
5. Prepare the fish: season the halibut on both sides with salt and pepper. Arrange the pieces directly on top of the tomato mixture.
6. Slow roast: cover the pot and transfer it to the oven. Roast for 30–40 minutes, or until the fish reaches an internal temperature of 140°F and is tender and flaky.
7. Rest the fish: carefully remove the halibut and transfer it to a plate. Cover loosely with foil and let rest for 10 minutes.
8. Finish the sauce: while the fish rests, return the Dutch oven to the stovetop over medium heat. Bring the tomato mixture to a gentle simmer for 3–5 minutes, allowing it to thicken slightly. Add a drizzle of olive oil if needed to enrich the sauce.
9. To serve: spoon the warm tomato and caper sauce into the bottom of a shallow bowl or plate. Nestle the halibut on top and finish with a small sprig of fresh thyme.
This is one of those dishes that looks impressive but quietly does all the work for you. Serve it with crusty bread to soak up the sauce or a simple side of roasted potatoes or herbed rice. The slow roasting keeps the halibut incredibly tender, while the tomatoes break down into a bright, briny sauce that feels both light and indulgent—perfect for a dinner party that’s meant to feel relaxed, not rushed.
