Cheesy Tuna Noodle Casserole

Instructions

1. Step 1: Preheat oven to 350°F (180°C).
2. Step 2: Cook noodles according to package instructions until al dente, then set aside.
3. Step 3: In a large skillet, sauté the onion and garlic until softened.
4. Step 4: Add the frozen peas and carrots, thyme, salt, and pepper to the skillet and cook until the vegetables are tender.
5. Step 5: In a large mixing bowl, combine the cooked noodles, tuna, and vegetable mixture.
6. Step 6: In a separate saucepan, melt the butter over medium heat.
7. Step 7: Add the milk to the saucepan and stir until warm and smooth.
8. Step 8: Gradually add the cheddar, mozzarella, and Parmesan cheese to the saucepan, stirring until melted and well combined.
9. Step 9: Pour the cheese sauce over the noodle mixture and stir until coated.
10. Step 10: Transfer the casserole to a 9x13 inch baking dish and top with additional grated cheese if desired.
11. Step 11: Bake for 25-30 minutes or until the top is golden brown and the casserole is heated through.