Cooking Techniques
PanPotPlates
Sheet Pan Herb-Roasted Halibut with Garlic Green Beans and Baby Potatoes
By PanPotPlates Test KitchenReviewed by PanPotPlates Editorial TeamPublished Apr 11, 2026 · Updated May 11, 2026
Mediterranean-Inspired
30 mins
sheetpanonepanpescatarianhealthyfamily-friendlyglutenfreedairyfreequickeasyseasonalflavorfulweeknight
A quick and easy Mediterranean-inspired sheet pan dinner featuring perfectly roasted halibut fillets seasoned with herbs, tender garlic green beans, and crispy baby potatoes. This healthy pescatarian dinner is naturally gluten- and dairy-free, ideal for busy weeknights and family meals.
Prep
10 min
Cook
20 min
Total
30 min
Servings
4
Difficulty
easy
Cuisine
Mediterranean-Inspired
Ingredients
Servings
4
- 1 1/2 pounds baby potatoes, halved
- 12 ounces fresh green beans, trimmed
- 2 tablespoons olive oil, divided
- 3 garlic cloves, minced
- 1 teaspoon dried oregano
- 1 teaspoon dried thyme
- 1/2 teaspoon paprika
- Salt and freshly ground black pepper, to taste
- 4 halibut fillets (about 6 ounces each), skin removed
- 1 lemon, thinly sliced
- Fresh parsley, chopped (for garnish)
Instructions
-
Preheat the oven to 425°F (220°C) and line a large rimmed sheet pan with parchment paper or lightly grease it.
-
In a large bowl, toss baby potatoes with 1 tablespoon olive oil, 1/2 teaspoon salt, 1/4 teaspoon black pepper, and half of the dried oregano and thyme.
-
Arrange the potatoes on one side of the sheet pan in a single layer. Roast for 10 minutes.
-
Meanwhile, toss the green beans with the remaining 1 tablespoon olive oil, minced garlic, the remaining oregano and thyme, paprika, and a pinch of salt and pepper.
-
After potatoes have roasted for 10 minutes, remove the pan and shift the potatoes to one side to make room for green beans and halibut.
-
Spread the green beans evenly beside the potatoes on the sheet pan.
-
Place halibut fillets spaced evenly on the pan. Season generously with salt and pepper and top each fillet with lemon slices.
-
Return the sheet pan to the oven and roast for 12-15 minutes, until halibut is opaque and flakes easily, potatoes are tender, and green beans are crisp-tender.
-
Remove from oven and garnish with fresh chopped parsley.
-
Serve immediately for a fresh, healthy Mediterranean sheet pan dinner.
Tips
Pan Or Pot Required
For this Sheet Pan Herb-Roasted Halibut with Garlic Green Beans and Baby Potatoes , you only need a large rimmed sheet pan.
Cookware Size Guidance
This recipe is crafted as a classic Sheet Pan Dinner, so choosing the right pan size is essential.
Cookware Swap Guidance
Designed as a convenient Sheet Pan Dinner , this recipe works best with a large rimmed sheet pan for even roasting and minimal cleanup.
Leftovers Quality
Reheat gently and add a splash of liquid when needed to keep the texture moist and tender.
Frequently Asked Questions
- Can I make Sheet Pan Herb-Roasted Halibut with Garlic Green Beans and Baby Potatoes ahead?
- Yes. Prep the ingredients or cook the full dish ahead, then reheat gently so the texture stays close to freshly made.
- What cookware works best?
- Use a rimmed sheet pan and avoid crowding so the recipe cooks evenly.
- How do I know it is done?
- Follow the recipe timing, then check the main ingredient for tenderness, bubbling, browning, or safe doneness before serving.
- Can I adjust the seasoning?
- Yes. Taste near the end and adjust salt, acid, herbs, or heat in small amounts.
Customize this sheet pan dinner to your tastes or dietary needs with these ingredient swaps while keeping it quick, healthy, and family-friendly:
- Halibut: Substitute with other flaky white fish like cod, tilapia, or haddock for a milder taste or budget-friendly option. Salmon also works for a richer flavor.
- Baby Potatoes: Use fingerling potatoes, small sweet potatoes, or pearl onions to add seasonal variety and texture.
- Green Beans: Swap in asparagus, broccolini, or snap peas as tasty, crisp-tender vegetable options.
- Herbs: Replace dried oregano and thyme with fresh rosemary, basil, or dill to alter the Mediterranean flavor profile while keeping it light.
- Olive Oil: Avocado oil or melted coconut oil can be used as heart-healthy, dairy-free alternatives.
- Garlic: Garlic powder may replace fresh garlic for convenience without losing much flavor.
- Seasonings: Try smoked paprika or cumin in lieu of regular paprika for a smoky twist.
These substitutions maintain alignment with key tags like sheetpan, onepan, pescatarian, healthy, glutenfree, and family-friendly, allowing you to personalize this quick, flavorful weeknight meal to suit your preference and pantry.
Storage and Reheating
Cool Sheet Pan Herb-Roasted Halibut with Garlic Green Beans and Baby Potatoes before storing. Refrigerate leftovers in an airtight container for up to 4 days.
Freeze portions for longer storage when the ingredients are freezer-friendly. Reheat gently with a splash of liquid if the dish looks dry.
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