Skinny Tuna Noodle Casserole: Healthy Comfort Food Lightened Up
Skinny Tuna Noodle Casserole: Healthy Comfort Food Lightened Up

Comfort food gets a healthy makeover with this skinny tuna noodle casserole! We’ve lightened up the classic recipe by swapping heavy cream and butter for Greek yogurt and reducing calorie-dense ingredients while keeping all the creamy, satisfying flavors you love. Perfect for busy weeknights or meal prep, this healthy tuna casserole delivers protein-packed nutrition without sacrificing taste.
Whether you’re following Weight Watchers, practicing clean eating, or simply looking for lighter dinner options, this recipe proves that comfort food can be both delicious and nutritious. The secret? Using plain Greek yogurt instead of cream-based sauces and whole wheat noodles for added fiber.
Ingredients

Main Ingredients
- 8 oz whole wheat egg noodles
- 2 cans (5 oz each) water-packed tuna, drained
- 1 cup plain Greek yogurt (non-fat or 2%)
- 1 cup reduced-fat cheddar cheese, shredded
- 1 cup frozen peas
- 1/2 cup low-fat cottage cheese
- 1/4 cup grated Parmesan cheese
Aromatics & Seasonings
- 1 medium onion, diced
- 2 cloves garlic, minced
- 1 cup mushrooms, sliced
- 1/2 cup celery, diced
- 1 tsp dried dill
- 1/2 tsp paprika
- 1/4 tsp black pepper
- 1/2 tsp salt
- 1 tbsp olive oil
Step-by-Step Instructions
Step 1: Prepare the Noodles and Vegetables
Cook the whole wheat egg noodles according to package directions, stopping about 1 minute before al dente (they’ll continue cooking in the oven). While noodles cook, heat olive oil in a large skillet over medium heat. Sauté onions, garlic, celery, and mushrooms until softened, about 5-7 minutes.
Step 2: Create the Creamy Sauce
In a large mixing bowl, combine Greek yogurt, cottage cheese, half of the shredded cheddar, Parmesan cheese, and seasonings (dill, paprika, salt, and pepper). Mix until well combined. The Greek yogurt creates a rich, creamy base without the heaviness of traditional cream sauces.
Step 3: Combine All Ingredients
Drain the cooked noodles and add them to the creamy mixture. Fold in the sautéed vegetables, drained tuna, and frozen peas. Gently mix until everything is evenly distributed. Be careful not to break up the tuna too much.
Step 4: Bake to Perfection
Transfer the mixture to a greased 9×13 inch baking dish. Sprinkle the remaining cheddar cheese over the top. Bake at 375°F (190°C) for 20-25 minutes, or until bubbly and golden brown on top. Let it rest for 5 minutes before serving.
Expert Tips
Making It Even Healthier
- For extra vegetables: Add chopped spinach or broccoli florets
- Lower carb option: Substitute zucchini noodles for pasta
- Boost protein: Add an extra can of tuna or mix in white beans
- Dairy-free version: Use dairy-free yogurt and cheese alternatives
Serving Suggestions
Serve your skinny tuna noodle casserole with a fresh green salad or steamed green beans for a complete meal. Leftovers reheat beautifully and make excellent next-day lunches.
FAQ
Can I make this ahead of time?
Yes! Assemble the casserole up to a day in advance, cover, and refrigerate. Add 10-15 minutes to baking time if starting from cold.
Is this Weight Watcher friendly?
Absolutely! Using Greek yogurt and reduced-fat cheese significantly lowers the points value compared to traditional recipes.
Can I freeze tuna casserole?
Yes, this freezes well for up to 3 months. Thaw overnight in the refrigerator before reheating.
What’s the calorie count?
Approximately 280-320 calories per serving, depending on specific ingredient choices.
Can I use fresh tuna?
Yes, you can use cooked fresh tuna instead of canned. Flake about 10 oz of cooked tuna into the mixture.

Skinny Tuna Noodle Casserole: Healthy Comfort Food Lightened Up
Ingredients
Method
- Cook the whole wheat egg noodles according to package directions, stopping about 1 minute before al dente (they’ll continue cooking in the oven). While noodles cook, heat olive oil in a large skillet over medium heat. Sauté onions, garlic, celery, and mushrooms until softened, about 5-7 minutes.
- In a large mixing bowl, combine Greek yogurt, cottage cheese, half of the shredded cheddar, Parmesan cheese, and seasonings (dill, paprika, salt, and pepper). Mix until well combined.
- Drain the cooked noodles and add them to the creamy mixture. Fold in the sautéed vegetables, drained tuna, and frozen peas. Gently mix until everything is evenly distributed.
- Transfer the mixture to a greased 9×13 inch baking dish. Sprinkle the remaining cheddar cheese over the top. Bake at 375°F (190°C) for 20-25 minutes, or until bubbly and golden brown on top. Let it rest for 5 minutes before serving.
