If you’re craving a cozy, creamy, and utterly satisfying dinner, I can’t wait to share this Supercharged Tuna Mornay Recipe with you. It’s that perfect blend of tender tuna, melty cheeses, and vibrant greens, all wrapped up in a luscious cheesy sauce topped with a crisp golden breadcrumb crust. This dish manages to be both comforting and nourishing, making it an instant favorite for busy weeknights or casual gatherings. Once you try it, it might just become your go-to go-to for transforming simple pantry staples into something spectacular.

Supercharged Tuna Mornay Recipe - Recipe Image

Ingredients You’ll Need

This Supercharged Tuna Mornay Recipe relies on simple but essential ingredients, each playing a special role in creating its unbeatable flavor and texture. From buttery roux to cheesy richness and fresh bursts of green, these ingredients come together beautifully without any fuss.

  • 2 tbsp butter: The base that adds richness and helps build that smooth sauce.
  • 2 tbsp all-purpose flour: Creates the roux that thickens the mornay to creamy perfection.
  • 2 cups whole milk: Gives the sauce a velvety, luscious texture.
  • 1 cup grated cheddar cheese: Brings sharp, melty flavor to the sauce.
  • 1/2 cup grated Parmesan cheese: Adds a nutty depth and umami kick.
  • 1 can (5 oz) tuna in oil or water, drained and flaked: The star protein that infuses the dish with savory goodness.
  • 1/2 cup frozen peas, thawed: Small pops of sweetness and a splash of vibrant green color.
  • 1 cup fresh spinach, chopped (or 1/2 cup frozen spinach, thawed and drained): Loaded with nutrients and freshness.
  • 1/4 cup onion, finely chopped: Builds aromatic foundation with subtle sweetness.
  • 2 garlic cloves, minced: Adds warmth and depth to the flavor base.
  • 1/2 tsp Dijon mustard (optional): Provides a gentle tangy zing that lifts the sauce.
  • Salt and pepper, to taste: Essential seasonings that highlight all the flavors.
  • 1 cup breadcrumbs (for topping): Creates that irresistible crispy golden crust.
  • 1 tbsp olive oil (for drizzling over breadcrumbs): Helps the topping brown beautifully in the oven.

How to Make Supercharged Tuna Mornay Recipe

Step 1: Prepare Your Oven and Dish

Start by preheating your oven to 375°F (190°C). Grease a 9×9 inch baking dish with butter or a light cooking spray to ensure your mornay doesn’t stick and bakes evenly.

Step 2: Sauté the Aromatics

Melt the butter in a medium saucepan over medium heat, then add the finely chopped onion and minced garlic. Sauté them until they’re soft and fragrant, about 3 to 4 minutes. This step layers in some essential flavor and sweetness that will make your sauce sing.

Step 3: Make the Roux

Stir in the flour, cooking it for 1 to 2 minutes. This step helps the flour cook off its raw taste and creates the classic base for your cheese sauce, so no lumps sneak into your creamy mornay.

Step 4: Whisk In the Milk

Slowly add the whole milk while whisking constantly to keep the mixture smooth and lump-free. Then cook for 5 to 7 minutes, stirring occasionally, until the sauce thickens up to a rich, creamy consistency that is just right for coating every piece of tuna and vegetable.

Step 5: Add the Cheeses and Seasonings

Remove the saucepan from heat, then stir in the grated cheddar, Parmesan, Dijon mustard if using, and season with salt and pepper. Keep stirring until all the cheese melts into the sauce, creating a velvety dreamy mixture that is the heart of this recipe.

Step 6: Combine Tuna and Greens

Fold in the flaked tuna, thawed peas, and chopped spinach gently to ensure everything is evenly coated in that creamy sauce — this colorful mix not only tastes incredible but also gives your dish great texture and nutrition.

Step 7: Assemble in Baking Dish

Transfer the tuna mixture into your prepared baking dish, spreading it out evenly so that every bite will have that perfect balance of creamy and chunky bits.

Step 8: Prepare the Topping

In a small bowl, toss the breadcrumbs with olive oil until well coated. This ensures a crisp, golden, and flavorful topping once baked.

Step 9: Bake to Golden Perfection

Sprinkle the breadcrumb mixture evenly over the tuna layer, then pop it in the oven for 20 to 25 minutes. You’ll know it’s done when the top is beautifully golden brown and the edges are bubbling joyfully.

Step 10: Let It Rest and Serve

Allow the dish to cool for a few minutes before serving to let it settle and befriend your fork with every gooey, cheesy bite.

How to Serve Supercharged Tuna Mornay Recipe

Supercharged Tuna Mornay Recipe - Recipe Image

Garnishes

Fresh herbs like parsley or chives sprinkled on top bring a lively color contrast and a refreshing herbal note that brightens this rich dish beautifully. Offering a wedge of lemon on the side can add a zingy brightness that complements the creamy mornay so well.

Side Dishes

This dish pairs wonderfully with simple steamed vegetables like broccoli or green beans, which add a crisp, light texture to balance the creaminess. A fresh green salad with a zesty vinaigrette can also provide a refreshing counterpoint and round out your meal effortlessly.

Creative Ways to Present

For a fun twist, serve individual portions in small ramekins topped with microgreens or edible flowers for a classy touch. Alternatively, use the tuna mornay as a filling for puff pastry pies or serve it spooned over toasted rustic bread for a casual open-faced delight that’s impressively comforting.

Make Ahead and Storage

Storing Leftovers

Store any leftover Supercharged Tuna Mornay Recipe in an airtight container in the refrigerator for up to 3 days. The creamy sauce and tender tuna hold up well, making it a great option for next-day lunches or quick dinners.

Freezing

You can freeze the baked dish in a freezer-safe container for up to 1 month. Just make sure it’s cooled completely before sealing to preserve flavor and texture so you can enjoy it whenever you need a reliable comfort meal.

Reheating

Reheat leftovers gently in the oven at 350°F (175°C) until warmed through to keep that breadcrumb topping crisp. Alternatively, warming smaller portions in the microwave works too but might soften the topping a bit.

FAQs

Can I use canned tuna in water or oil?

Yes! Both canned tuna in water or oil works well in this recipe. Tuna in oil tends to add a richer flavor, but draining either thoroughly is important to avoid a watery sauce.

Is it possible to make this recipe dairy-free?

You can substitute dairy milk with plant-based milk like almond or oat milk, and use dairy-free cheese alternatives. However, the texture and flavor of the mornay sauce might be a bit different but still delicious.

Can I add other vegetables?

Absolutely! Feel free to add mushrooms, bell peppers, or finely chopped carrots to add more variety and flavor to your Supercharged Tuna Mornay Recipe.

What can I use instead of breadcrumbs?

If you don’t have breadcrumbs, crushed crackers, panko, or even oat flakes make excellent alternatives for that crunchy topping.

Is Dijon mustard necessary?

Dijon mustard is optional, but it adds a subtle tang and depth that enhances the cheese sauce beautifully. If you don’t have it, the dish will still be tasty without it.

Final Thoughts

Now that you have the complete guide to making this Supercharged Tuna Mornay Recipe, I hope you feel inspired to bring it to your table soon. It’s a special kind of comfort food that’s quick to pull together yet impressive in flavor and texture. Whether for a cozy family dinner or a weeknight treat, this dish always delivers the warm, cheesy goodness we all crave. Enjoy every creamy, crispy bite!

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Supercharged Tuna Mornay Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 3.8 from 47 reviews
  • Author: admin
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 4 servings
  • Category: Main Course
  • Method: Baking
  • Cuisine: Western
  • Diet: Low Salt

Description

Supercharged Tuna Mornay is a creamy, cheesy baked casserole featuring flaked tuna, fresh spinach, and peas in a rich homemade mornay sauce. Topped with golden, crispy breadcrumbs, this comforting dish is quick to prepare and perfect for a satisfying family meal.


Ingredients

Scale

Sauce and Base

  • 2 tbsp butter
  • 2 tbsp all-purpose flour
  • 2 cups whole milk
  • 1 cup grated cheddar cheese
  • 1/2 cup grated Parmesan cheese
  • 1/2 tsp Dijon mustard (optional)
  • Salt and pepper, to taste

Filling

  • 1 can (5 oz) tuna in oil or water, drained and flaked
  • 1/2 cup frozen peas, thawed
  • 1 cup fresh spinach, chopped (or 1/2 cup frozen spinach, thawed and drained)
  • 1/4 cup onion, finely chopped
  • 2 garlic cloves, minced

Topping

  • 1 cup breadcrumbs
  • 1 tbsp olive oil (for drizzling over breadcrumbs)


Instructions

  1. Preheat and Prepare: Preheat the oven to 375°F (190°C) and grease a 9×9 inch baking dish with butter or cooking spray to prevent sticking.
  2. Sauté Aromatics: Melt butter in a medium saucepan over medium heat, then add chopped onion and minced garlic. Sauté for 3–4 minutes until softened and fragrant, creating a flavorful base.
  3. Form Roux: Stir in the flour and cook for 1-2 minutes, stirring constantly to make a roux, which will thicken the sauce without lumps.
  4. Add Milk and Thicken Sauce: Gradually whisk in the milk, ensuring a smooth mixture. Cook for 5–7 minutes while stirring until the sauce thickens to a creamy consistency.
  5. Add Cheese and Seasoning: Remove from heat and stir in the cheddar cheese, Parmesan cheese, Dijon mustard (if using), salt, and pepper. Mix until cheese melts fully and sauce is smooth.
  6. Combine Filling Ingredients: Fold the flaked tuna, thawed peas, and chopped spinach into the cheese sauce until evenly coated.
  7. Transfer to Baking Dish: Pour the tuna mixture into the prepared dish and spread it out evenly.
  8. Prepare Breadcrumb Topping: Mix breadcrumbs with olive oil until thoroughly coated, then sprinkle evenly over the tuna mixture.
  9. Bake: Bake in the preheated oven for 20–25 minutes until the breadcrumb topping is golden brown and the casserole is bubbling around the edges.
  10. Cool and Serve: Allow the dish to cool for a few minutes before serving. Optionally garnish with fresh herbs and serve with steamed vegetables or a fresh salad.

Notes

  • For a lighter version, substitute whole milk with low-fat milk.
  • Dijon mustard is optional but adds a nice tangy depth to the sauce.
  • Frozen spinach should be well drained to avoid excess moisture.
  • Leftovers can be refrigerated and reheated in the oven for best texture.
  • Use panko breadcrumbs for extra crunch if desired.

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