Grilled Scallops with Caramelized Onion and Lemon Butter
Prep
20 mins
Cook
25 mins
Servings
4
Difficulty
Medium
This is one of my favorite weeknight dinners because it feels fancy but comes together in under an hour. Sweet caramelized onions paired with bright lemon butter create an elegant sauce that makes simple grilled scallops taste restaurant quality. Sea scallops are packed with lean protein and selenium, which supports heart health, and they cook so quickly you'll have dinner on the table faster than you can order takeout. The beauty of this dish is how the flavors do most of the work for you, letting the natural sweetness of the scallops shine through while the garlic and thyme add depth without fuss.
Ella x
Ingredients
- ¾ kglarge sea scallops(patted dry)
- 3 mediumyellow onions(sliced into thin rings)
- 4 tablespoonsbutter(divided)
- 2fresh lemon(zested and juiced)
- 3garlic cloves(minced)
- 118 mldry white wine
- 3 sprigsfresh thyme
- 2 tablespoonsextra virgin olive oil
- 1 teaspoonkosher salt
- ½ teaspoonblack pepper
- 1 tablespoonvegetable oil(for grill)
Detail level
Instructions
- 1
Heat 2 tablespoons of butter in a large skillet over medium heat. Add sliced onions and cook for 15-18 minutes, stirring occasionally, until golden brown and caramelized. Season with a pinch of salt and set aside.
Tip: Low and slow is key—resist the urge to increase heat, as this develops the natural sweetness of the onions.
- 2
While onions cook, pat scallops completely dry with paper towels and season both sides with kosher salt and black pepper about 10 minutes before grilling.
Tip: Dry scallops are essential for achieving a proper sear and preventing them from steaming on the grill.
- 3
Preheat your grill to high heat. Lightly oil the grates with vegetable oil using a paper towel held with tongs.
Tip: A well-oiled grill prevents sticking and creates beautiful caramelization marks.
- 4
Place scallops on the grill in a single layer without moving them. Grill for 3-4 minutes on the first side until they develop a golden crust.
Tip: Resist the temptation to flip or move the scallops—let them sit undisturbed for optimal browning.
- 5
Flip scallops carefully and grill for another 2-3 minutes on the second side until cooked through. Transfer to a plate.
Tip: Scallops cook quickly; overcooked scallops become rubbery, so watch them closely.
- 6
In a small saucepan, melt the remaining 2 tablespoons of butter over medium heat. Add minced garlic and cook for 30 seconds until fragrant.
Tip: Watch the garlic carefully to prevent burning, which would create a bitter flavor.
- 7
Pour in the white wine and add the fresh thyme sprigs. Simmer for 2 minutes to reduce slightly, then remove from heat.
Tip: The wine adds acidity and depth that complements the sweet caramelized onions.
- 8
Stir in the lemon zest and lemon juice, then season the sauce with salt and pepper to taste.
Tip: Taste as you go—adjust lemon juice to your preference for brightness.
- 9
Plate the grilled scallops and top with a generous spoonful of caramelized onions. Drizzle with the lemon butter sauce and garnish with fresh thyme if desired.
Tip: Serve immediately while the scallops are still warm for the best flavor and texture.
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