Baked Shrimp and Spinach Gratin

Introduction

Baked Shrimp and Spinach Gratin is a rich, comforting seafood casserole that combines tender shrimp, nutritious spinach, a creamy garlic cheese sauce, and a golden, crispy topping. It is elegant enough for a special dinner yet simple enough for a weeknight meal. The combination of juicy shrimp, creamy spinach, and bubbling cheese creates a dish that is satisfying without being overly heavy.

Whether served with crusty bread, steamed rice, roasted vegetables, or a fresh green salad, this gratin is a crowd-pleaser that brings restaurant-quality flavors to your home kitchen.

Nutritional Information (Per Serving)

Calories: 410 kcal

Protein: 34 g

Carbohydrates: 9 g

Fat: 27 g

Saturated Fat: 13 g

Fiber: 2 g

Sugar: 3 g

Cholesterol: 240 mg

Sodium: 620 mg

Calcium: 28% DV

Iron: 18% DV

Vitamin A: 65% DV

Vitamin C: 22% DV

Potassium: 640 mg

Nutritional values are approximate.

Preparation Time

Prep Time: 20 minutes
Cook Time: 25 minutes
Total Time: 45 minutes
Servings: 6

Ingredients

For the Shrimp

2 pounds large shrimp, peeled and deveined
1 tablespoon olive oil
2 tablespoons butter
4 cloves garlic, minced
1 teaspoon paprika
½ teaspoon black pepper
½ teaspoon sea salt
½ teaspoon Italian seasoning
1 teaspoon lemon zest

For the Spinach Layer

5 cups fresh spinach
1 tablespoon butter
2 cloves garlic, minced
Pinch of salt
Pinch of black pepper

Cream Sauce

3 tablespoons butter
3 tablespoons all-purpose flour
2 cups whole milk
½ cup heavy cream
1 teaspoon Dijon mustard
½ teaspoon onion powder
½ teaspoon garlic powder
¼ teaspoon nutmeg
Salt to taste
Pepper to taste

Cheese

1½ cups shredded mozzarella
1 cup grated Parmesan
½ cup Gruyère cheese
½ cup cheddar cheese

Crispy Topping

1 cup panko breadcrumbs
2 tablespoons melted butter
2 tablespoons Parmesan cheese
1 tablespoon chopped parsley

Garnish

Fresh parsley
Lemon wedges
Extra Parmesan

Instructions

Step 1: Prepare the Shrimp

Pat the shrimp dry using paper towels.

Season with paprika, salt, pepper, Italian seasoning, and lemon zest.

Heat olive oil and butter in a skillet over medium-high heat.

Cook shrimp for about 1 minute per side until just pink.

Remove immediately to prevent overcooking.

Step 2: Cook the Spinach

In the same skillet, melt butter.

Add garlic and cook for 30 seconds.

Add fresh spinach.

Cook until wilted.

Drain any excess liquid.

Step 3: Make the Cream Sauce

Melt butter in a saucepan.

Whisk in flour.

Cook for one minute.

Slowly whisk in milk.

Add heavy cream.

Cook until thickened.

Season with:

Dijon mustard
Garlic powder
Onion powder
Nutmeg
Salt
Pepper

Remove from heat.

Mix in half of the mozzarella and half of the Parmesan until melted.

Step 4: Assemble

Preheat oven to 375°F (190°C).

Grease a 9×13-inch baking dish.

Layer spinach evenly.

Arrange shrimp over spinach.

Pour cream sauce evenly.

Sprinkle remaining cheeses over the top.

Mix breadcrumbs with melted butter and Parmesan.

Scatter breadcrumb mixture evenly.

Step 5: Bake

Bake for 20–25 minutes.

Broil for 2–3 minutes until the topping becomes golden brown.

Allow to rest for 5 minutes before serving.

Cooking Methods

Traditional Oven Method

Provides the best golden crust and creamy interior.

Individual Gratin Dishes

Divide the mixture into ramekins for elegant single servings.

Make-Ahead Method

Assemble the gratin up to one day in advance. Refrigerate, then bake just before serving.

Low-Carb Method

Skip the breadcrumbs and add extra Parmesan cheese for a keto-friendly version.

Mediterranean Style

Add chopped artichokes, sun-dried tomatoes, and feta cheese.

Spicy Version

Include cayenne pepper, chili flakes, or diced jalapeños.

History

The word gratin comes from French cuisine, where dishes are topped with cheese or breadcrumbs and baked until beautifully browned. Traditionally prepared with potatoes or vegetables, gratins have evolved into seafood versions featuring shrimp, crab, lobster, and scallops.

Spinach gratins became especially popular because spinach pairs wonderfully with creamy sauces and melted cheese. Combining shrimp with spinach adds protein and a delicate seafood flavor, making this dish a modern favorite in coastal kitchens around the world.

Presentation

Serve the gratin bubbling hot in the baking dish.

Garnish with:

Fresh chopped parsley
Lemon wedges
Extra grated Parmesan
Fresh cracked black pepper

Pair it with:

Garlic bread
Buttered pasta
Rice pilaf
Roasted asparagus
Caesar salad
White wine or sparkling water with lemon

Tips for Success

Use fresh shrimp whenever possible.
Do not overcook the shrimp before baking.
Drain spinach well to prevent a watery gratin.
Freshly grate the cheese for better melting.
Let the gratin rest for a few minutes before serving.
Broil briefly for an extra-crispy topping.

Why People Love This Recipe

Rich and creamy without being overwhelming.
High in protein and packed with nutritious spinach.
Easy enough for busy weeknights.
Elegant enough for holidays and dinner parties.
Crispy, cheesy topping adds irresistible texture.
Family-friendly and perfect for entertaining.
Great for meal prep and leftovers.

More Delicious Variations

Shrimp and Mushroom Gratin
Cajun Shrimp Spinach Gratin
Shrimp and Broccoli Gratin
Lobster and Spinach Gratin
Crab and Shrimp Seafood Gratin
Garlic Herb Shrimp Gratin
Shrimp Alfredo Gratin
Shrimp and Cauliflower Gratin
Four-Cheese Seafood Gratin
Mediterranean Shrimp Gratin

Conclusion

Baked Shrimp and Spinach Gratin is the perfect blend of creamy comfort and elegant seafood dining. The tender shrimp, flavorful spinach, velvety cheese sauce, and crispy golden topping come together to create a dish that’s both nourishing and indulgent. Whether you’re preparing a cozy family dinner or entertaining guests, this gratin is sure to impress with its rich flavors, satisfying textures, and beautiful presentation. Enjoy it fresh from the oven with your favorite side dishes for a memorable meal.