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Creamy Seafood Spinach Mushroom Bake 🦐🧀

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Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Recipe Difficulty Intermediate (Requires basic sauce-making skills)
Cooking Intensity Moderate Heat (Searing & sauce reduction) to High Heat (Final broil)
Servings 6 generous portions

Pro Tip for Success: Seafood cooks rapidly! The absolute biggest mistake cooks make with baked seafood dishes is overcooking the shrimp and scallops during the initial stovetop sear. They only need 60–90 seconds per side before heading into the oven.

Ingredients Breakdown

For the Fresh Seafood & Produce

  • 1 lb Large Shrimp: Peeled, deveined, and tails removed.

  • 1/2 lb Bay Scallops: Pat dry thoroughly with paper towels.

  • 8 oz Cremini (Baby Bella) Mushrooms: Cleaned and sliced into 1/4-inch thick pieces.

  • 5 oz Fresh Baby Spinach: Roughly chopped.

  • 1 small Yellow Onion: Finely diced.

  • 4 cloves Garlic: Minced.

  • 2 tbsp Unsalted Butter: Divided for searing.

  • 1 tbsp Extra Virgin Olive Oil.

For the Creamy Cheese Sauce & Seasonings

  • 8 oz Cream Cheese: Softened to room temperature for smooth melting.

  • 1 cup Heavy Whipping Cream.

  • 1/2 cup Quality Chicken or Seafood Stock.

  • 1 cup Gruyère or Swiss Cheese: Shredded (provides a rich, nutty flavor).

  • 1/2 cup Sharp White Cheddar Cheese: Shredded.

  • 1/2 cup Parmesan Cheese: Freshly grated, divided (half for the sauce, half for the crust).

  • 1 tbsp Fresh Lemon Juice: Cuts through the richness.

  • 1 tsp Italian Seasoning.

  • 1/2 tsp Smoked Paprika.

  • 1/4 tsp Red Pepper Flakes (optional, for a subtle warmth).

  • Kosher Salt & Freshly Cracked Black Pepper: To taste.

Step-by-Step Cooking Guide

Follow these sequential steps closely to achieve a silky sauce that never breaks or turns watery.

1.Prep Seafood & Equipment:Medium Heat | 5 Minutes.

Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish (or a 3-quart ceramic casserole dish).

Pat the shrimp and scallops thoroughly dry with paper towels—excess moisture prevents a good sear. Toss the seafood in a small bowl with 1/2 teaspoon kosher salt, 1/4 teaspoon black pepper, and 1/2 teaspoon smoked paprika.

2.Flash-Sear the Seafood:Medium-High Heat | 3 Minutes.

Melt 1 tablespoon of butter with 1 tablespoon of olive oil in a large skillet over medium-high heat.

Add the shrimp and scallops in a single layer. Sear for just 60 to 90 seconds per side until opaque on the outside but still slightly undercooked in the center. Transfer immediately to a plate using a slotted spoon and set aside. Do not overcook, as they will finish cooking in the oven.

3.Sauté Mushrooms & Aromatics:Medium Heat | 7 Minutes.

In the same skillet, add the remaining 1 tablespoon of butter over medium heat. Add the sliced mushrooms and cook undisturbed for 3–4 minutes until they begin to brown.

Stir in the diced onion and minced garlic. Sauté for another 3 minutes until the onions are soft and translucent and the garlic is fragrant.

4.Wilt the Spinach & Build the Sauce Base:Medium-Low Heat | 6 Minutes.

Add the baby spinach to the skillet in batches, stirring until wilted (about 2 minutes). Reduce heat to medium-low.

Add the softened cream cheese, stirring continuously until melted and smooth. Pour in the heavy cream, stock, and fresh lemon juice. Whisk until fully combined and simmering gently.

5.Combine Cheeses & Fold Seafood:Low Heat | 3 Minutes.

Turn the heat to low. Stir in the Italian seasoning, red pepper flakes, 1/2 cup Gruyère, 1/2 cup White Cheddar, and 1/4 cup Parmesan. Stir until melted into a rich, velvety sauce. Taste and adjust salt and pepper if needed.

Gently fold the seared shrimp, scallops, and any accumulated juices from the plate back into the sauce.

6.Assemble & Bake:375°F (190°C) | 15-18 Minutes.

Pour the entire creamy seafood mix into your prepared baking dish. Top evenly with the remaining 1/2 cup Gruyère and 1/4 cup Parmesan.

Bake uncovered at 375°F (190°C) for 15 minutes until the edges are bubbling. Switch oven to Broil on High for 2–3 minutes to brown the cheese top. Remove from oven and let rest for 5 minutes before serving.

 

Recipe Duration & Intensity Chart

To help you manage time and stove heat settings during the process, refer to this quick intensity map:

Cooking Stage Primary Heat Intensity Duration Visual Cue
Seafood Sear Medium-High Heat 3 mins Pink on edges, soft center
Vegetable Sauté Medium Heat 7 mins Golden mushrooms, sweet garlic aroma
Sauce Emulsion Medium-Low to Low Heat 9 mins Smooth, thick, bubbling sauce
Oven Bake 375°F (190°C) 15 mins Vigorous edge bubbling
Broil Finish High Broil 2–3 mins Golden brown, bubbly crust

Nutritional Information

Below is the estimated nutritional breakdown per serving (based on 6 total servings).

Nutrient Amount Per Serving % Daily Value
Calories 520 kcal —
Total Fat 38g 49%
Saturated Fat 22g 110%
Cholesterol 215mg 72%
Sodium 820mg 36%
Total Carbohydrates 8g 3%
Dietary Fiber 1.5g 5%
Sugars 2.5g —
Protein 36g 72%
Vitamin A 3400 IU 68%
Calcium 410mg 41%
Iron 2.8mg 16%

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