# What You Need:
→ Pasta
01 - 9 oz egg noodles or fusilli
→ Vegetables
02 - 1 cup frozen peas
03 - 1 small onion, finely chopped
04 - 2 cloves garlic, minced
→ Tuna
05 - 2 cans (6 oz each) tuna in water, drained
→ Sauce
06 - 2 tablespoons unsalted butter
07 - 2 tablespoons all-purpose flour
08 - 1 1/2 cups milk
09 - 1/2 cup sour cream
10 - 1/2 teaspoon salt
11 - 1/4 teaspoon black pepper
12 - 1/2 teaspoon dried thyme
13 - 1/2 cup shredded cheddar cheese
→ Topping
14 - 1 cup panko breadcrumbs
15 - 2 tablespoons unsalted butter, melted
16 - 2 tablespoons grated Parmesan cheese
# How-To Steps:
01 - Preheat oven to 375°F. Grease a 2-quart baking dish with butter or cooking spray.
02 - Bring a large pot of salted water to boil. Add pasta and cook until al dente according to package directions. Drain thoroughly and set aside.
03 - In a large skillet over medium heat, melt 2 tablespoons butter. Add chopped onion and minced garlic; sauté for 3 minutes until fragrant and softened.
04 - Sprinkle flour evenly over the onion mixture. Cook for 1 minute, stirring constantly to eliminate raw flour taste.
05 - Gradually whisk in milk, ensuring no lumps form. Bring to a gentle simmer and cook for 3–4 minutes, stirring continuously until sauce thickens enough to coat the back of a spoon.
06 - Remove skillet from heat. Stir in sour cream, salt, black pepper, dried thyme, and shredded cheddar cheese until completely smooth and incorporated.
07 - Add drained tuna, frozen peas, and cooked pasta to the sauce. Gently fold together until evenly distributed throughout the creamy mixture.
08 - Pour the tuna pasta mixture into the prepared baking dish, spreading it into an even layer.
09 - In a small bowl, combine panko breadcrumbs, melted butter, and grated Parmesan cheese. Mix well until breadcrumbs are evenly coated.
10 - Sprinkle the breadcrumb mixture evenly over the top of the casserole, covering the entire surface.
11 - Bake uncovered for 20–25 minutes until sauce bubbles around edges and topping turns golden brown and crispy.
12 - Allow casserole to rest for 5 minutes before serving to let it set and make serving easier.
