Roasted Mussels with Caramelized Onion and Garlic
Prep
20 mins
Cook
35 mins
Servings
4
Difficulty
Medium
Sweet caramelized onions paired with tender roasted mussels in a savory white wine reduction, finished with crispy garlic and fresh herbs for an elegant yet simple seafood dish.
Ella x
Ingredients
- 1 kgfresh mussels(debearded and cleaned)
- 3 largeyellow onions(thinly sliced)
- 6garlic cloves(minced)
- 237 mldry white wine
- 118 mlvegetable broth
- 3 tablespoonsbutter(divided)
- 2 tablespoonsolive oil
- 2 sprigsfresh thyme
- 1bay leaf
- 1 teaspoonsea salt(to taste)
- ½ teaspoonblack pepper(freshly ground)
- 1lemon(zest and juice)
- 3 tablespoonsfresh parsley(chopped)
Detail level
Instructions
- 1
Preheat your oven to 425°F (220°C). Heat 1 tablespoon of olive oil and 1 tablespoon of butter in a large skillet over medium heat.
Tip: Use a heavy-bottomed skillet for even heat distribution when caramelizing onions.
- 2
Add the sliced onions and cook for 15-18 minutes, stirring occasionally, until deeply golden brown and caramelized. Season with a pinch of salt and set aside.
Tip: Don't rush this step—slow caramelization develops the onions' natural sweetness.
- 3
In the same skillet, add the remaining 1 tablespoon of olive oil and 2 tablespoons of butter over medium-high heat. Add the minced garlic and cook for 1-2 minutes until fragrant.
Tip: Keep the heat moderate to prevent the garlic from burning.
- 4
Pour in the white wine and vegetable broth, then add the thyme sprigs and bay leaf. Bring the mixture to a simmer.
Tip: The wine will deglaze the pan and create a flavorful base for the mussels.
- 5
Return the caramelized onions to the skillet and stir to combine with the broth mixture. Place the cleaned mussels directly into the skillet, distributing them evenly.
Tip: Discard any mussels that are already open and don't close when tapped.
- 6
Transfer the entire skillet to the preheated oven and roast for 8-10 minutes, until all the mussels have opened. Discard any that remain closed.
Tip: Opened mussels mean they're perfectly cooked—overcooked mussels become rubbery.
- 7
Remove from the oven and stir in the lemon zest and fresh lemon juice. Taste and adjust seasoning with sea salt and freshly ground black pepper as needed.
Tip: The acidity of lemon brightens the rich, savory flavors.
- 8
Divide the mussels and caramelized onion mixture among four serving bowls, pouring the broth generously over each. Garnish with fresh chopped parsley and serve immediately with crusty bread for soaking up the flavorful liquid.
Tip: Serve in shallow bowls to capture all the delicious broth.
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