Skinny Tuna Noodle Casserole: Healthy Comfort Food Lightened Up

Skinny Tuna Noodle Casserole: Healthy Comfort Food Lightened Up
This skinny tuna noodle casserole proves that comfort food doesn’t have to be heavy! By swapping traditional ingredients for healthier alternatives, we’ve created a delicious baked pasta dish that’s perfect for weeknight dinners. Using Greek yogurt instead of cream, whole wheat noodles for extra fiber, and plenty of vegetables, this recipe delivers all the cozy comfort of the classic with a fraction of the calories.
Traditional tuna casseroles can be heavy on cream and cheese, but our version maintains that creamy texture while being mindful of nutrition. Whether you’re looking for a quick weeknight meal or a dish to bring to gatherings, this healthier take on a beloved classic will become a family favorite.

Ingredients
- 8 oz whole wheat egg noodles
- 2 cans (5 oz each) solid white tuna in water, drained
- 1 cup plain Greek yogurt
- 1 cup low-fat milk
- 1 cup frozen peas, thawed
- 1 medium onion, diced
- 2 celery stalks, chopped
- 1 cup sliced mushrooms
- 2 cloves garlic, minced
- 1 cup reduced-fat cheddar cheese, shredded
- 1/4 cup whole wheat breadcrumbs
- 1 tbsp olive oil
- 1 tsp Dijon mustard
- 1/2 tsp smoked paprika
- Salt and pepper to taste
- Fresh parsley for garnish
Step-by-Step Instructions
Step 1: Prepare the Noodles
Cook the whole wheat egg noodles according to package directions until al dente. Drain well and set aside. Preheat your oven to 375°F (190°C).
Step 2: Sauté Vegetables
Heat olive oil in a large skillet over medium heat. Add onion, celery, and mushrooms, cooking until softened, about 5-7 minutes. Add garlic and cook for another minute until fragrant.
Step 3: Create the Creamy Sauce
In a medium bowl, whisk together Greek yogurt, milk, Dijon mustard, smoked paprika, salt, and pepper. This creates a creamy base without heavy cream or canned soup.
Step 4: Combine Ingredients
In a large mixing bowl, combine the cooked noodles, sautéed vegetables, flaked tuna, peas, and 3/4 cup of the shredded cheese. Pour the yogurt sauce over everything and mix gently until well combined.
Step 5: Assemble and Bake
Transfer the mixture to a 9×13 inch baking dish. Sprinkle with remaining cheese and breadcrumbs. Bake for 20-25 minutes until bubbly and golden brown on top. This creates a perfect baked pasta dish that’s both healthy and satisfying.
Expert Tips
Nutrition Boost: For extra protein, add a cup of cooked chickpeas or white beans to the casserole. The Greek yogurt provides tanginess similar to sour cream but with more protein and less fat.
Make Ahead Friendly: Assemble the casserole up to a day in advance, cover, and refrigerate. Add 5-10 minutes to the baking time when cooking from cold.
Freezing Instructions: This casserole freezes beautifully. Bake as directed, cool completely, then freeze in portions for up to 3 months. Reheat in the oven at 350°F until warmed through.
Customization Ideas: Feel free to add other vegetables like chopped spinach, broccoli, or carrots. For a different flavor profile, try adding a teaspoon of lemon zest to the sauce.
Frequently Asked Questions
Can I use regular pasta instead of whole wheat?
Absolutely! Regular egg noodles work perfectly fine. The whole wheat version adds extra fiber, but both will result in a delicious comforting pasta dish.
How do I make this dairy-free?
Substitute the Greek yogurt with dairy-free yogurt and use plant-based milk and cheese alternatives. The texture will be slightly different but still delicious.
Can I use fresh tuna instead of canned?
Yes! Cook and flake about 10 ounces of fresh tuna steak. This works especially well if you’re looking for an even leaner option.
What sides pair well with this casserole?
Serve with a fresh vegetable side like a simple green salad or roasted vegetables to keep the meal light and balanced.

Skinny Tuna Noodle Casserole: Healthy Comfort Food Lightened Up
Ingredients
Method
- Cook the whole wheat egg noodles according to package directions until al dente. Drain well and set aside. Preheat your oven to 375°F (190°C).
- Heat olive oil in a large skillet over medium heat. Add onion, celery, and mushrooms, cooking until softened, about 5-7 minutes. Add garlic and cook for another minute until fragrant.
- In a medium bowl, whisk together Greek yogurt, milk, Dijon mustard, smoked paprika, salt, and pepper. This creates a creamy base without heavy cream or canned soup.
- In a large mixing bowl, combine the cooked noodles, sautéed vegetables, flaked tuna, peas, and 3/4 cup of the shredded cheese. Pour the yogurt sauce over everything and mix gently until well combined.
- Transfer the mixture to a 9×13 inch baking dish. Sprinkle with remaining cheese and breadcrumbs. Bake for 20-25 minutes until bubbly and golden brown on top.






