Tuna Zucchini Casserole

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Skip the takeout and embrace comfort food with a wholesome twist. This tuna zucchini casserole combines fresh zucchini ribbons with protein-packed tuna in a creamy cheese sauce. Not only is it delicious, the zucchini adds nutrition and fiber while the tuna packs a protein punch. This easy weeknight wonder is ready in under an hour, making it a go-to repeat recipe for busy families.

A Gold Serving Spoon Scoops a Hearty Helping of Creamy Tuna Zucchini Casserole.

A Gold Serving Spoon Scoops a Hearty Helping of Creamy Tuna Zucchini Casserole.


Tuna Zucchini Casserole

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Prep Time 10 minutes
Cook Time 50 minutes
Total Time 1 hour
Servings 6
Calories 263kcal
Author Toni Williams


  • 5 medium zucchinis spiralized
  • 2 Tbsp. extra virgin olive oil divided
  • 1 small yellow onion diced
  • 8 oz. cremini mushrooms sliced
  • 2 large garlic cloves minced
  • 1 Tbsp. all-purpose flour
  • 1 cup unsweetened almond milk
  • 1 tsp. reduced sodium vegetable base Better Than Bouillon
  • 1 tsp. Italian seasoning
  • 3/4 cup white cheddar cheese shredded
  • 1/4 cup mozzarella shredded
  • 2 5 oz. cans of solid albacore tuna drained
  • 1/2 cup seasoned bread crumbs
  • Salt to taste
  • Pepper to taste
  • Parsley chopped (for garnish)
  • Lemons sliced (for garnish)


  • Preheat oven to 350 degrees F.
  • Place spiralized zucchini on parchment lined baking sheet. Bake approximately 20 mins to remove excess water.
  • While zucchini is baking, heat 1 Tbsp. extra virgin olive oil in large pan over medium heat. Sauté onions and mushrooms 5 minutes or until onions are translucent and mushrooms are just tender.
  • Add garlic to pan and cook 1 minute. Season with salt and pepper to taste.
  • Stir in 1 Tbsp. flour followed by 1 cup unsweetened almond milk, 1 tsp. Better Than Bouillon and 1 tsp. Italian seasoning.
  • Add white cheddar cheese and mozzarella and stir until melted into sauce.
  • Lastly, add tuna and baked zucchini spirals into cheese sauce. Gently fold ingredients until well combined.
  • Spray medium baking dish with nonstick cooking spray. Transfer zucchini tuna mixture into dish.
  • In a small pan over medium-high heat, cook bread crumbs and 1 Tbsp. extra virgin olive oil until golden brown.
  • Sprinkle bread crumbs over medium-high heat and bake casserole 20-25 minutes.
  • Let cool 10-15 minutes before serving.
  • Garnish with fresh parsley and lemon slices.


Grab these ingredients and more at Vitacost.



Serving: 1g | Calories: 263kcal | Carbohydrates: 19g | Protein: 17g | Fat: 14g | Saturated Fat: 5g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Cholesterol: 32mg | Sodium: 591mg | Potassium: 766mg | Fiber: 3g | Sugar: 6g | Vitamin A: 545IU | Vitamin C: 31mg | Calcium: 252mg | Iron: 2mg

Featured Products

Safe Catch Wild Elite Pure Tuna

Private Selection Parmesan Herb Panko Bread Crumbs

Better Than Bouillon Vegetable Base Reduced Sodium

The post Tuna Zucchini Casserole first appeared on The Upside by Vitacost.com.


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