Baked Tuna Mac Casserole Recipe

Name: Baked Tuna Mac Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 4 Tablespoons Lightly Salted Butter; 1/4 cups Finely Diced Or Grated White Onion; 1/4 cups Diced Red Bell Pepper; 1 cup White Button Mushrooms (wipe With Damp Paper Towels, Sliced Thinly); 1/2 teaspoons Black Pepper; 1/4 teaspoons Chopped Fresh Parsley; 3 Tablespoons All-purpose Flour; 2 cups Whole Milk; 2 cups Elbow Pasta, Cooked According To Package Instructions And Drained; 1/4 cups White Cheddar Cheese, Shredded; 1/4 cups Fontina Cheese, Shredded; 2 cans (5 Oz. Size) Tuna, Drained (Your Choice, Light, Albacore); 3/4 cups Seasoned Bread Crumbs, Optional

Servings: persons

4 Tablespoons Lightly Salted Butter
1/4 cups Finely Diced Or Grated White Onion
1/4 cups Diced Red Bell Pepper
1 cup White Button Mushrooms (wipe With Damp Paper Towels, Sliced Thinly)
1/2 teaspoons Black Pepper
1/4 teaspoons Chopped Fresh Parsley
3 Tablespoons All-purpose Flour
2 cups Whole Milk
2 cups Elbow Pasta, Cooked According To Package Instructions And Drained
1/4 cups White Cheddar Cheese, Shredded
1/4 cups Fontina Cheese, Shredded
2 cans (5 Oz. Size) Tuna, Drained (Your Choice, Light, Albacore)
3/4 cups Seasoned Bread Crumbs, Optional

1
Preheat oven to 375 F.
2
In a saute pan over medium heat, melt the butter.
3
Once melted add onions and bell peppers and saute for a few minutes, until starting to soften.
4
Add button mushrooms and stir to combine.
5
Turn heat to low and add black pepper and parsley, and stir.
6
Allow the mixture to cook for a few minutes until the moisture from the mushrooms starts to evaporate.
7
Add flour and stir to combine.
8
Once flour turns to a paste, add the milk and stir to combine.
9
Add the cooked and drained pasta and stir mixture again.
10
Add cheddar cheese and Fontina cheese and stir well with a spatula.
11
Transfer to a baking dish.
12
Add tuna into a bowl and break apart.
13
Add tuna into the baking dish and fold it into the mixture.
14
Add seasoned breadcrumbs over the top, optional.
15
Cover with a sheet of foil.
16
Place baking dish in the oven and bake for 25 minutes.
17
Remove foil and bake for an additional 5 minutes to brown the top.
18
Serve immediately and enjoy!

974

kcal

Calories

Fat

108

Carbs

Protein

Fat Carbs Protein

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 13 ingredients. The key ingredients include: 4 Tablespoons Lightly Salted Butter, 1/4 cups Finely Diced Or Grated White Onion, 1/4 cups Diced Red Bell Pepper, 1 cup White Button Mushrooms (wipe With Damp Paper Towels, Sliced Thinly), and more.

Yes, Baked Tuna Mac Casserole falls under the Seafood category and is a great choice for this type of meal.

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

That's it — enjoy your meal!

Baked Tuna Mac Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions