Grilled Haddock with Lime & Caper Butter
Updated Jun 25, 2025
This Grilled Haddock with Lime & Caper Butter is a light and flavorful seafood dish that’s easy to make and perfect for spring and summer. Tender fish is topped with a savory, citrusy sauce.
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Nothing quite compares to dinner in the great outdoors here in the Pacific Northwest. The sounds of nature on a calm spring night sets the tone for this Grilled Haddock with Caper & Lime Butter.
If you’ve never tasted haddock, it most compares to cod. It’s a hearty-yet-light fish that I find to be a bit sweeter and more flavorful. It pairs so well with a side of grilled green beans and a spoonful of salty-citrus goodness from the Caper & Lime Butter.
Grilled Haddock with Caper & Lime Butter
This Grilled Haddock with Lime & Caper Butter is a light and flavorful seafood dish that’s easy to make and perfect for spring and summer. Tender fish is topped with a savory, citrusy sauce.
Ingredients
- 2-4 4- ounce haddock portions
- 4 limes
- 3 tablespoons butter, use ghee for Whole30
- 2-3 tablespoons capers, drained
- 1 garlic clove, peeled
- Himalayan pink salt
- Cracked black pepper
- Pinch red pepper flakes
Instructions
- Preheat outdoor grill to 475 degrees F.
- While grill is heating, slice 2 limes into ¼-inch rounds. You will need about 3 slices per haddock portion.
- In a small cast iron pot, add butter (or ghee), juice of 2 limes, garlic clove, capers and a pinch of red pepper flakes. Use salt and pepper grinders to add in about 1 teaspoon Himalayan pink salt and ½ teaspoon cracked black pepper.
- Once grill is heated, add cast iron pot to the grates to melt the butter and bring sauce to a simmer.
- Add lime slices directly to the grill grate, creating a bed for the haddock. Place the haddock skin-side down onto the lime slices, brush the tops with Caper & Lime Butter and season generously with more Himalayan pink salt and cracked black pepper.
- Close the grill lid and let cook for 10 minutes, undisturbed, until fish reaches an internal temperature of 145 degrees F. Use a spatula to carefully remove the fish.
- Spoon Caper & Lime Butter onto each filet and serve.
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