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High-Protein Tuna Casserole

This high-protein tuna casserole is a hearty, healthy, and satisfying dish featuring creamy Greek yogurt sauce, packed with nutritious ingredients.
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Main Course
Cuisine American
Servings 6 servings
Calories 350 kcal

Ingredients
  

Casserole Ingredients

  • 2 cans tuna, drained Use high-quality tuna packed in water
  • 1 cup whole grain pasta Cook according to package instructions
  • 1 cup Greek yogurt Base for the creamy sauce
  • 1 cup frozen peas Can substitute with fresh peas if available
  • 1 cup chopped broccoli Fresh or frozen can be used
  • 1/2 cup diced onions
  • 2 cloves garlic, minced
  • 1 teaspoon dried oregano
  • 1 teaspoon salt Adjust to taste
  • 1/2 teaspoon black pepper Adjust to taste
  • 1 tablespoon olive oil For greasing and sautéing
  • 1/2 cup vegetable broth
  • Fresh herbs for garnish (e.g., parsley)
HOMECOOKIN Slow Cooker, Extra Large 10 Quart Digital Programmable Slow Cookers with Timer
Ninja Air Fryer with Air Crisp | 5 QT Capacity fits up to 4lbs of Fries | 4-in-1 Pro
Instant Pot 6QT VORTEX Plus Air Fryer, 6-in-1
Cuisinart Stand Mixer, 12 Speed, 5.5 Quart Stainless Steel Bowl, Chef’s Whisk, Mixing Paddle, Dough Hook, Splash Guard w/ Pour Spout, White Linen, SM-50NAS, Manual

Instructions
 

Preparation

  • Preheat your oven to 350°F (175°C). Grease a baking dish with a little olive oil.
  • Cook the whole grain pasta according to package instructions until al dente. Drain and set aside.
  • In a large skillet, heat the olive oil over medium heat. Sauté the diced onions and minced garlic until translucent, about 3-5 minutes.
  • Add the chopped broccoli and frozen peas to the skillet. Continue cooking for an additional 5 minutes until the vegetables are tender.

Mixing

  • In a mixing bowl, combine the Greek yogurt, vegetable broth, oregano, salt, and black pepper. Mix well to create a smooth sauce.
  • In a large bowl, combine the drained tuna, cooked pasta, sautéed vegetables, and the yogurt sauce. Stir until everything is evenly coated.

Baking

  • Pour the mixture into the prepared baking dish. Top with shredded cheese.
  • Bake for 25-30 minutes or until the cheese is bubbly and golden.
  • Remove from the oven and let cool for a few minutes before serving.

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Notes

For added flavor, consider adding a dash of lemon juice or Parmesan cheese to the yogurt sauce. Store leftovers in an airtight container for up to 3-4 days in the refrigerator.
Keyword Easy Casserole Recipe, Greek Yogurt Sauce, Healthy Dinner, High-Protein Meals, Tuna Casserole