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White Sauce Shrimp-Spinach Lasagne: An Unexpected Culinary Delight

I remember the first time I made this “lasagne.” My friend, Sarah, had declared she was “bored” with the usual party fare. So, inspired by a craving and a refrigerator full of random ingredients, I concocted this dish, secretly terrified it would be a disaster. The rich, creamy white sauce mingling with the savory shrimp and the bite of the spinach created such a symphony of flavors, that I was immediately hooked. Sarah was right to be bored. It was one of those unexpected culinary victories, and I’ve been making it ever since.

Recipe Overview

Prep Time: 30 minutes
Cook Time: 32-33 minutes
Total Time: 1 hour 2-3 minutes
Servings: 8
Yield: 1 casserole
Dietary Type: Not Gluten-Free

Ingredients

8 ounces spinach linguine, cooked al dente
8 ounces linguine, cooked al dente
3 tablespoons salted butter
3 tablespoons extra virgin olive oil
1 lb raw shrimp, peeled, deveined, and de-tailed
2 garlic cloves, chopped
1 medium sweet onion, roughly chopped
8 ounces fresh mushrooms, trimmed and roughly chopped
4 tablespoons all-purpose flour
5 tablespoons unsalted butter
2 2/3 cups whole milk, pre-warmed to 100-degrees F
2 garlic cloves, minced
1/2 teaspoon kosher salt
1/2 tablespoon white pepper
24 ounces cottage cheese, small curd
16 ounces Monterey Jack cheese, shredded
4 ounces Asiago cheese, grated
1 tablespoon dried parsley
4 ounces frozen spinach, thawed and chopped
1 large jalapeno pepper, de-seeded and minced
1 teaspoon Old Bay Seasoning
Cooking spray

Equipment Needed

Large, non-stick skillet
Double boiler
Whisk
9″ x 13″ casserole dish

Instructions

Ensure both the spinach linguine and regular linguine are cooked al dente and ready for assembly.
Preheat your oven to 375-degrees F (190 degrees C).
In a large, non-stick skillet over medium heat, melt the 3 tablespoons of salted butter. Add the 3 tablespoons of extra virgin olive oil and the chopped garlic to the melted butter.
Pour approximately 2/3 of this butter and oil mixture into a separate bowl and set aside. This will be used later.
In the same skillet, still over medium heat, add the roughly chopped sweet onion, trimmed and roughly chopped mushrooms, and the minced jalapeno. Sauté these vegetables until they begin to soften, about 6 minutes. Stir frequently to prevent burning.
Remove the vegetable mixture from the skillet and set aside.
Re-add the reserved melted butter and oil mixture from the bowl to the skillet.
Add the raw shrimp to the skillet. Sprinkle the Old Bay Seasoning evenly over the shrimp.
Sauté the shrimp over medium heat for approximately 6 minutes, stirring occasionally, until they are pink and cooked through. Be careful not to overcook the shrimp. Remove the shrimp from the pan and set aside. The remaining butter blend in the pan can be discarded or saved for another use.
Prepare the white sauce using a double boiler. Fill the bottom section with approximately 3 cups of water and bring to a boil over high heat.
In the top section (dry), melt the 5 tablespoons of unsalted butter.
Add the pre-warmed milk (100-degrees F) to the melted butter in the double boiler.
As the mixture begins to steam, whisk in the white pepper and the minced garlic.
When the mixture comes to a boil, gradually whisk in the all-purpose flour. Continue whisking vigorously to ensure a smooth sauce without lumps.
Reduce the heat to maintain a low boil and continue cooking the sauce for 15 minutes, whisking frequently to prevent sticking or burning. Adjust the temperature as needed.
If the sauce becomes too thick, gradually add more pre-warmed milk, 1/4 cup at a time, until the desired consistency is achieved. The ideal consistency is similar to pancake batter.
After 15 minutes, remove the white sauce from the heat and set aside.
Spray a 9″ x 13″ (or larger) casserole dish with cooking spray.
Spread 1/3 of the white sauce evenly across the bottom of the prepared casserole dish, ensuring most of the bottom is covered.
Layer just over half of the cooked pasta (approximately 60%) over the white sauce.
Spread all of the cottage cheese evenly over the pasta layer.
Distribute the thawed and chopped spinach evenly over the cottage cheese.
Layer the remaining pasta evenly across the spinach.
Spread the remaining white sauce evenly over the pasta.
Distribute the cooked shrimp evenly across the white sauce.
Spread the sautéed onion, mushroom, and jalapeno mixture evenly over the shrimp.
Top the entire casserole with the shredded Monterey Jack cheese and the grated Asiago cheese, distributing them evenly.
Finish by sprinkling the dried parsley across the top as a garnish.
Place the casserole dish on the middle rack of the preheated oven (375-degrees F or 190 degrees C), uncovered.
Bake for 30 minutes.
After 30 minutes, change the oven setting to BROIL. Move the rack up to one position below the top rack.
Broil the dish until the top is lightly browned, approximately 2-3 minutes. WATCH CAREFULLY, as the top can burn very quickly under the broiler.
Remove the lasagne from the oven when the top is lightly browned.
Allow the dish to “rest” for approximately 10 minutes before cutting into serving sizes.
Serve hot with garlic bread, buttered Parker House Rolls, or Texas Toast.

Expert Tips & Tricks

Don’t overcook the pasta! Aim for al dente, as it will continue to cook in the oven. Slightly undercooking it ensures it won’t become mushy.
Pre-warming the milk prevents the white sauce from seizing up and ensures a smoother consistency.
Constant whisking is key to a smooth white sauce. Don’t skip this step!
If you’re short on time, you can use pre-shredded cheese, but freshly shredded cheese melts more evenly.
For a richer flavor, substitute half-and-half or heavy cream for some of the milk in the white sauce.

Serving & Storage Suggestions

Serve the White Sauce Shrimp-Spinach Lasagne hot, straight from the oven (after resting, of course!). A simple green salad with a vinaigrette dressing makes a lovely side.

Leftovers should be cooled completely before storing. Cover tightly with plastic wrap or transfer to an airtight container. It will keep in the refrigerator for 3-4 days.

For longer storage, you can freeze individual portions for up to 2-3 months. Thaw overnight in the refrigerator before reheating.

To reheat, cover with foil and bake at 350-degrees F (175 degrees C) until heated through, about 20-30 minutes. You can also reheat individual portions in the microwave.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	821.2 kcal	N/A
Calories from Fat	393 g	48%
Total Fat	43.7 g	67%
Saturated Fat	24 g	119%
Cholesterol	192.3 mg	64%
Sodium	976.5 mg	40%
Total Carbohydrate	56.6 g	18%
Dietary Fiber	5.3 g	21%
Sugars	6.7 g	26%
Protein	50.2 g	100%

Note: Nutritional information is an estimate and may vary based on specific ingredients and portion sizes.

Variations & Substitutions

Gluten-Free: While this recipe calls for wheat-based linguine, you can substitute your favorite gluten-free pasta. Be sure to cook it al dente, as gluten-free pasta tends to become softer. You can also use a gluten-free all-purpose flour blend for the white sauce.
Vegetarian: Omit the shrimp entirely and add more mushrooms or other vegetables like zucchini or bell peppers for a vegetarian version.
Spicy Kick: Add a pinch of red pepper flakes to the white sauce or increase the amount of minced jalapeno for extra heat.
Cheese Variations: Experiment with different cheese blends. Fontina, provolone, or Gruyère would all be delicious additions.
Seafood Medley: Add crab meat or scallops along with the shrimp for a more complex seafood flavor.

FAQs (Frequently Asked Questions)

Q: Can I assemble this lasagne ahead of time?
A: Absolutely! Assemble the lasagne completely, cover tightly, and refrigerate for up to 24 hours before baking. Add about 10-15 minutes to the baking time.

Q: Can I use frozen shrimp?
A: Yes, just be sure to thaw the shrimp completely and pat it dry before sautéing. This will prevent it from becoming rubbery.

Q: What can I substitute for Asiago cheese?
A: Parmesan or Romano cheese are good substitutes for Asiago. They offer a similar salty, nutty flavor.

Q: Can I use low-fat cottage cheese?
A: You can use low-fat cottage cheese, but it may affect the overall creaminess of the dish.

Q: The white sauce is too thick. What should I do?
A: Gradually add more pre-warmed milk, a tablespoon at a time, until you reach the desired consistency.

Final Thoughts

This White Sauce Shrimp-Spinach Lasagne is more than just a recipe; it’s an invitation to create something truly special. Don’t be intimidated by the steps – each one contributes to a dish that’s both comforting and elegant. Gather your ingredients, put on some music, and enjoy the process of creating a meal that’s sure to impress. I encourage you to try it, share it with loved ones, and let me know what you think! Perhaps pair it with a crisp Pinot Grigio for the ultimate dining experience.

White Sauce Shrimp-Spinach Lasagne Recipe