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Creamy cheese sauce being poured over scallops and shrimp in baking dish

Savory Scallop & Shrimp Gratin

A rich and elegant seafood bake with scallops and shrimp in a creamy Gruyère sauce, topped with crispy panko.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 4 portions
Course: Main Course
Cuisine: American, Seafood
Calories: 450
Ingredients Equipment Method Notes

Ingredients
  

  • 8 oz sea scallops cleaned and halved
  • 8 oz shrimp peeled and deveined
  • 1 cup heavy cream
  • 1 cup shredded Gruyère cheese
  • 0.5 cup panko breadcrumbs
  • 2 tbsp unsalted butter
  • 2 cloves garlic minced
  • 0.25 cup green onions finely sliced
  • 1 tsp lemon zest
  • salt and pepper to taste
  • fresh parsley for garnish
  • olive oil for drizzling on breadcrumbs

Equipment

  • saucepan
  • baking dish
  • Small bowl

Method
 

  1. Preheat oven to 375°F (190°C).
  2. In a saucepan over medium heat, melt butter. Add minced garlic and sauté for 1–2 minutes until fragrant.
  3. Stir in heavy cream and bring to a gentle simmer.
  4. Add shredded Gruyère cheese, stirring until fully melted and smooth.
  5. Mix in lemon zest, then season with salt and pepper to taste.
  6. In a baking dish, arrange scallops and shrimp evenly.
  7. Pour the creamy cheese sauce over the seafood.
  8. In a small bowl, combine panko breadcrumbs with olive oil and a pinch of salt.
  9. Sprinkle the breadcrumb mixture over the top.
  10. Bake for 20–25 minutes until seafood is opaque and topping is golden.
  11. Optionally, broil for 2–3 minutes for extra crispiness.
  12. Let rest briefly before garnishing with parsley and green onions.

Notes

Use fresh seafood for best flavor. Stir constantly when melting cheese to prevent lumps. Can substitute crab or lobster. For gluten-free: use GF breadcrumbs. For low-carb: use crushed almonds.