Coquille Saint-Jacques with Mushrooms and Gruyère
A classic French scallop casserole with sautéed mushrooms, creamy sauce, and a golden Gruyère cheese crust. This french-inspired seafood ready in about 45 minutes pairs large sea scallops, tablespoons unsalted butter, shallots, finely chopped for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 400 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 12 pieces large sea scallops
- 4 tablespoons unsalted butter
- 2 shallots, finely chopped
- 1 cup button mushrooms, sliced
- 1/3 cup dry white wine
- 3/4 cup heavy cream
- 1 teaspoon Dijon mustard
- 3/4 cup Gruyère cheese, grated
- 1 tablespoon fresh parsley, chopped
- 3/4 teaspoon salt
- 1/2 teaspoon black pepper
- 1 tablespoon lemon juice
- 1/4 cup breadcrumbs
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Instructions
- Step 1: Preheat oven to 375°F. Pat 12 large sea scallops dry and season with 1/2 teaspoon salt and 1/4 teaspoon black pepper.
- Step 2: In a large skillet, melt 2 tablespoons unsalted butter over medium heat. Add scallops and sear for 2 minutes per side until golden but still tender inside. Remove and set aside.
- Step 3: In the same skillet, add remaining 2 tablespoons butter and sauté 2 finely chopped shallots and 1 cup sliced button mushrooms over medium heat for 4 minutes until softened.
- Step 4: Pour in 1/3 cup dry white wine and cook for 3 minutes until reduced by half.
- Step 5: Stir in 3/4 cup heavy cream and 1 teaspoon Dijon mustard, cooking gently for 2-3 minutes until sauce thickens slightly.
- Step 6: Add 1 tablespoon fresh parsley, 1 tablespoon lemon juice, and remaining salt and pepper. Stir to combine.
- Step 7: Place scallops evenly into four small gratin dishes or ramekins, spoon mushroom sauce over each.
- Step 8: Top each with 3 tablespoons grated Gruyère cheese and sprinkle 1 tablespoon breadcrumbs on top.
- Step 9: Bake in preheated oven for 12-15 minutes until cheese is bubbly and golden brown.
- Step 10: Serve hot garnished with extra parsley if desired.
Frequently asked questions
How long does Coquille Saint-Jacques with Mushrooms and Gruyère take to make?
Total time is about 45 minutes (20 min prep + 25 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Coquille Saint-Jacques with Mushrooms and Gruyère?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep large sea scallops from drying out.
Can I substitute ingredients in Coquille Saint-Jacques with Mushrooms and Gruyère?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Coquille Saint-Jacques with Mushrooms and Gruyère for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Coquille Saint-Jacques with Mushrooms and Gruyère?
French seafood like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
