Warm, creamy, and packed with flavor, this lightened-up tuna casserole brings all the nostalgia of the classic dish with a modern, healthier twist. Made with wholesome ingredients and simple steps, it’s the perfect meal-prep dish or weeknight dinner—comfort food you can feel good about.
Why You’ll Love This Recipe
Hearty and Satisfying: A wholesome blend of tuna, pasta, and creamy sauce.
Lighter Ingredients: Lower-fat dairy and whole-wheat pasta keep it nutritious.
Family-Friendly: Kid-approved flavors that everyone at the table will love.
Easy to Prep Ahead: Assemble and refrigerate or freeze for a future meal.
Ingredients
For the Casserole
- 8 oz whole wheat rotini or elbow macaroni
- 2 cans (5 oz each) tuna in water, drained
- 1 cup frozen peas
- 1/2 cup diced onion
- 1 clove garlic, minced
- 1 cup plain nonfat Greek yogurt
- 1/2 cup low-fat milk
- 1/2 cup reduced-fat shredded cheddar cheese
- 1/4 tsp black pepper
- Salt to taste
For the Topping
- 1/4 cup whole wheat breadcrumbs
- 1 tbsp grated Parmesan cheese
- Cooking spray or 1 tsp light butter (optional)
Instructions
Cook the Pasta
- Bring a pot of salted water to a boil. Cook the pasta until just al dente. Drain and set aside.
Prepare the Sauce
- In a large bowl, mix Greek yogurt, milk, cheddar cheese, pepper, and a pinch of salt.
- Stir in peas, onion, garlic, and drained tuna.
- Fold in the cooked pasta until well combined.
Assemble the Casserole
- Preheat oven to 375°F (190°C). Lightly spray a baking dish (9×9 or similar) with cooking spray.
- Pour the mixture into the dish and spread evenly.
Add the Topping
- In a small bowl, combine breadcrumbs and Parmesan. Sprinkle over the casserole.
- Lightly spray the top with cooking spray or dot with butter for a golden crust.
Bake
- Bake uncovered for 20–25 minutes, or until the top is golden and the casserole is heated through.

Nutritional Information (Per Serving, Approximate)
Calories: 270 | Carbs: 28g | Fat: 8g | Protein: 22g | Fiber: 4g | Sugar: 3g
Tips for Success
- Use Greek Yogurt: This keeps the casserole creamy without heavy cream or sour cream.
- Add Extra Veggies: Stir in mushrooms, chopped spinach, or bell peppers for added trients.
- Make It Gluten-Free: Use gluten-free pasta and breadcrumbs if needed.
- Make-Ahead Friendly: Assemble a day ahead and store in the fridge until ready to bake.
Why This Recipe Works
- Smart Ingredient Swaps: Lighter dairy and tuna in water reduce calories while keeping flavor.
- Well-Balanced Meal: With protein, fiber, and veggies all in one dish, it’s a full dinner in a single pan.
- Customizable Base: The recipe is flexible—easy to adapt to your preferences or pantry.
- Classic Comfort: Familiar and nostalgic, but updated to be more nutritious and modern.
This tuna casserole is the perfect marriage of creamy comfort and balanced nutrition. It’s quick to make, great for leftovers, and packed with classic flavor. Whether for a weeknight family dinner or meal prepping for the week, this dish will keep everyone coming back for seconds.
The Ultimate Tuna Casserole – Crispy Topping and All!
6
servings15
minutes25
minutes270
kcal40
minutesWarm, creamy, and packed with flavor, this lightened-up tuna casserole brings all the nostalgia of the classic dish with a modern, healthier twist. Made with wholesome ingredients and simple steps, it’s the perfect meal-prep dish or weeknight dinner—comfort food you can feel good about.
Ingredients
For the Casserole
8 oz whole wheat rotini or elbow macaroni
2 cans (5 oz each) tuna in water, drained
1 cup frozen peas
1/2 cup diced onion
1 clove garlic, minced
1 cup plain nonfat Greek yogurt
1/2 cup low-fat milk
1/2 cup reduced-fat shredded cheddar cheese
1/4 tsp black pepper
Salt to taste
For the Topping
1/4 cup whole wheat breadcrumbs
1 tbsp grated Parmesan cheese
Cooking spray or 1 tsp light butter (optional)
Instructions
- Cook the Pasta
Bring a pot of salted water to a boil. Cook the pasta until just al dente. Drain and set aside. - Prepare the Sauce
In a large bowl, mix Greek yogurt, milk, cheddar cheese, pepper, and a pinch of salt.
Stir in peas, onion, garlic, and drained tuna.
Fold in the cooked pasta until well combined. - Assemble the Casserole
Preheat oven to 375°F (190°C). Lightly spray a baking dish (9×9 or similar) with cooking spray.
Pour the mixture into the dish and spread evenly. - Add the Topping
In a small bowl, combine breadcrumbs and Parmesan. Sprinkle over the casserole.
Lightly spray the top with cooking spray or dot with butter for a golden crust. - Bake
Bake uncovered for 20–25 minutes, or until the top is golden and the casserole is heated through.
Notes
- Use Greek Yogurt: This keeps the casserole creamy without heavy cream or sour cream.
Add Extra Veggies: Stir in mushrooms, chopped spinach, or bell peppers for added nutrients.
Make It Gluten-Free: Use gluten-free pasta and breadcrumbs if needed.
Make-Ahead Friendly: Assemble a day ahead and store in the fridge until ready to bake.