Creamy Tuna Noodle Casserole Better Than You Remember

Ingredients

• 340g (12 oz) egg noodles, cooked al dente
• 1 tablespoon olive oil (15 ml)
• 1 medium yellow onion, finely chopped (approximately 1 cup)
• 2 celery stalks, finely chopped (approximately 1 cup)
• 2 cloves garlic, minced
• 6 tablespoons (85g) unsalted butter, divided
• 6 tablespoons (45g) all-purpose flour
• 3 cups (710 ml) whole milk, warmed
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 1/4 teaspoon ground nutmeg
• 1 cup (237 ml) vegetable broth
• 1 cup (113g) frozen peas
• 1/2 cup (56g) shredded cheddar cheese
• 1/4 cup (28g) shredded parmesan cheese
• 2 cans (142g/5 oz each) tuna in water, drained well
• 1 cup (40g) panko breadcrumbs
• 2 tablespoons (30g) unsalted butter, melted